Dr. Brendan O'Kelly
Associate Professor, Civil Struct & Env. Eng.
Biography
Brendan O'Kelly earned bachelor's, masters and Doctoral degrees in civil and geotechnical engineering in 1992, 1994 and 2000 from University College Dublin, where he held the posts of Pierce-Newman Fellow in Civil Engineering, Research Fellow in Soil Mechanics and Assistant Lecturer in Civil Engineering for successive two-year periods (1994-2000). He earned his PhD on the topic of Development of a New Apparatus for Hollow Cylinder Testing under Generalised Stress Conditions. He then worked as a geotechnical engineer with Scott Wilson Consulting Engineers, UK (serving geotechnical design and resident engineer secondments), before joining the Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, as Lecturer in Geotechnical Engineering late 2001. He is a Chartered Engineer and Chartered Environmentalist (ICE, UK) and was made a Fellow of Trinity College Dublin (2010). In 2012, during sabbatical, he served as Experienced Researcher on Marie Curie IAPP project (Nonstationary response of spatially extended structures) based in Plaxis BV, The Netherlands. He is an Associate Editor for the journals Environmental Geotechnics (ICE, UK) and Geotechnics (MDPI) and a Council Member of The International Society of Environmental Geotechnology. His main research interests are soil consistency limits, ground improvement, geotechnics of water- and wastewater-treatment sludges and the geomechanical behavior/properties of peat and other highly organic soils, on which he has published more than 100 refereed journal papers.
Publications and Further Research Outputs
Peer-Reviewed Publications
Aminu, I., Asadi, A., O'Kelly, B.C., Huat, B.B.K. and Reul, O., Ultralightweight foundation system for peaty ground, Environmental Geotechnics, 7, 2021, p10
Abbasimaedeh, P., Ghanbari, A., O'Kelly, B.C., Tavanafar, M. and Irdmoosa, K.G., Geomechanical behaviour of uncemented expanded polystyrene (EPS) beads-clayey soil mixtures as lightweight fill, Geotechnics (MDPI), 1, (1), 2021, p38 - 58
Soltani, A. and O'Kelly, B.C., Reappraisal of the ASTM/AASHTO standard rolling device method for plastic limit determination of fine-grained soils, Geosciences, 11, (6 (article 247)), 2021, p15
Tang, C.S., Paleologos, E.K., Vitone, C., Du, Y.J., Li, J.S., Jiang, N.J., Deng, Y.F., Chu, J., Shen, Z., Koda, E., Dominijanni, A., Fei, X., Vaverková, M.D., Osiński, P., Chen, X., Asadi, A., Takeuchi, M.R.H., Bo, M.W., Abuel-Naga, H., Leong, E.C., Farid, A., Baser, T., O'Kelly, B.C., Jha, B., Goli, V.S.N.S. and Singh, D.N., Environmental geotechnics: challenges and opportunities in the post-COVID-19 world, Environmental Geotechnics, 8, (3), 2021, p172 - 192
Paleologos E.K., O'Kelly B.C., Tang C.S., Cornell K., Rodríguez-Chueca J., Abuel-Naga H., Koda E., Farid A., Vaverková M.D., Kostarelos K., Goli V.S.N.S., Guerra-Rodríguez S., Leong E.C., Jayanthi P., Shashank B.S., Sharma S., Shreedhar S., Mohammad A., Jha B., Kuntikana G., Bo M.W., Mohamed A.M.O., and Singh D.N., Post Covid-19 water and waste water management to protect public health and geoenvironment, Environmental Geotechnics, 8, (3), 2021, p193 - 207
O'Kelly B.C., El-Zein A., Liu X., Patel A., Fei X., Sharma S., Mohammad A., Goli V.S.N.S., Wang J.J., Li D., Shi Y., Xiao L., Kuntikana G., Shashank B.S., Sarris T.S., Rao B.H., Mohamed A.M.O., Paleologos E.K., Nezhad M.M. and Singh D.N., Microplastics in soils: an environmental geotechnics perspective, Environmental Geotechnics, 2021, p33
O'Kelly, B.C., Review of recent developments and understanding of Atterberg limits determinations, Geotechnics (MDPI), 1, (1), 2021, p59 - 75
Ghadr S., Samadzadeh A., Bahadori H., O'Kelly B.C. and Assadi-Langroudi A., Liquefaction resistance of silty sand with ground rubber additive, International Journal of Geomechanics (ASCE), 21, (6), 2021, p18 (article 04021076)
Soltani A. and O'Kelly B.C., Discussion of "The flow index of clays and Its relationship with some basic geotechnical properties" by G. Spagnoli, M. Feinendegen, L. Di Matteo, and D. A. Rubinos, published in Geotechnical Testing Journal 42, no. 6 (2019): 1685-1700, Geotechnical Testing Journal, 44, (1), 2021, p216 - 219
Soltani A., Deng A., Taheri A. and O'Kelly B.C., Intermittent swelling and shrinkage of a highly expansive soil treated with polyacrylamide, Journal of Rock Mechanics and Geotechnical Engineering, 13, (6), 2021
Li, W., O'Kelly, B.C., Fang, K. and Yang, M., Water content determinations for peaty soils using the oven-drying method, Environmental Geotechnics, 7, 2021, p9
O'Kelly B.C., Discussion of "Strength and consolidation characteristics for cement stabilized cohesive soil considering consistency index" by Ahmed F. Zidan, published in Geotechnical and Geological Engineering, https://doi.org/10.1007/s10706-020-01367-6, Geotechnical and Geological Engineering, 2021, p4
Moreno-Maroto, J.M., Alonso-Azcárate, J. and O'Kelly, B.C., Reply to Discussion on "Review and critical examination of fine-grained soil classification systems based on plasticity" by J.M. Moreno-Maroto, J. Alonso-Azcárate and B.C. O'Kelly, Applied Clay Science 200 (2021) 105955, Applied Clay Science, 206, (article 106074), 2021, p4
Vaverková M.D., Paleologos E.K., Dominijanni A., Koda E., Tang C.S., Małgorzata W., Li Q., Guarena N., Mohamed A.M.O., Vieira C.S., Manassero M., O'Kelly B.C., Xie Q., Bo M.W., Adamcová D., Podlasek A., Anand U.M., Mohammad A., Goli V.S.N.S., Kuntikana G., Palmeira E.M., Pathak S. and Singh D.N., Municipal solid waste management under COVID-19: challenges and recommendations, Environmental Geotechnics, 8, (3), 2021, p217 - 232
Mohammad A., O'Kelly B.C. and Singh D.N., NovADEC: Novel Approach for Determination of the Elemental Content of organic matter, International Journal of Environmental Analytical Chemistry, 2021, p16
O'Kelly B.C. and Soltani A., Discussion: Determining the plasticity properties of high plastic clays: a new empirical approach [Arab J Geosci (2020) 13(11), 394], Arabian Journal of Geosciences, 14, (8), 2021, p5 (article 715)
Soltani A., Raeesi R. and O'Kelly B.C., Cyclic swell-shrink behaviour of an expansive soil treated with a sulfonated oil, Proceedings of the Institution of Civil Engineers - Ground Improvement , 2021, p14
Moreno-Maroto J.M., Alonso-Azcárate J. and O'Kelly B.C., Review and critical examination of fine-grained soil classification systems based on plasticity, Applied Clay Science, 200, (Article 105955), 2021, p13
Vardanega P.J., Haigh S.K. and O'Kelly B.C., Use of fall-cone flow index for soil classification: a new plasticity chart, Géotechnique, 2021, p8
Haigh S.K., Vardanega P.J. and O'Kelly B.C., Discussion of 'Factors influencing undrained strength of fine-grained soils at high water contents' by H.B. Nagaraj, M.V. Sravan and B.S. Deepa [published in Geomechanics and Geoengineering (2018), 13(4), 276-287], Geomechanics and Geoengineering, 2021, p3
Zomorodian S.M.A., Noghab M.J.A., Zolghadr M. and O'Kelly B.C., Overtopping erosion of model earthen dams analysed using digital image-processing method, Proceedings of the Institution of Civil Engineers - Water Management, 173, (6), 2020, p304 - 316
Feng S., Vardanega P.J., Ibraim E., Widyatmoko I., Ojum C., O'Kelly, B.C. and Nogal M. , Discussion: Permeability assessment of some granular mixtures, Géotechnique, 70, (9), 2020, p845 - 847
Agwaze, P. (Pius), The Effect of Shear Rate and Surface Roughness during Fall-Cone Calibration, (Principal supervisor: B.C. O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2020
Shahrokhi-Shahraki R., Kwon P.S., Park J., O'Kelly B.C. and Rezania S., BTEX and heavy metals removal using pulverized waste tires in engineered fill materials, Chemosphere, 242, (Article 125281), 2020, p12
O'Kelly B.C. and Nogal M., Determination of soil permeability coefficient following an updated grading entropy method, Geotechnical Research, 7, (1), 2020, p58 - 70
O'Kelly B.C., Vardanega, P.J. Haigh S.K. and Barnes G.E., Discussion: Use of fall cones to determine Atterberg limits: a review, Géotechnique, 70, (7), 2020, p647 - 651
Elsaidy H., Yan W.M., Pender M.J., Soltani A. and O'Kelly B.C., Discussion: A novel formula for the prediction of swelling pressure of compacted expansive soils, Géotechnique Letters, 10, (4), 2020, p1-4
O'Kelly B.C., Oettle N.K. and Ramos J.A., Geotechnical properties of compacted biosolids for monofill design, As-Samra, Jordan, Environmental Geotechnics, 7, (6), 2020, p404 - 434
Li, W., O'Kelly, B.C., Yang, M., Fang, K., Li, X and Li, H., Specific gravity of solids relationship with ignition loss for peaty soils, Geotechnical Research, 7, (3), 2020, p134 - 145
Vardanega P.J., O'Kelly B.C. and Haigh S.K., Discussion of "Reclaimed lignin-stabilized silty soil: undrained shear strength, Atterberg limits, and microstructure characteristics" by Tao Zhang, Guojun Cai, and Songyu Liu, ASCE Journal of Materials in Civil Engineering, 32, (3), 2020, p4 (article 07020001)
Zomorodian S.M.A., Moghispoor S., O'Kelly B.C. and Babaei S.S., Improving internal erosion resistance of silty sand using additives, Dams and Reservoirs, 30, (1), 2020, p29 - 41
Ghadr S., Assadi-Langroudi A., Hung C, O'Kelly B.C., Bahadori H. and Ghodsi T., Stabilization of sand with colloidal nano-silica hydrosols, Applied Sciences, 10, (15), 2020, p24 (article 5192)
Arshad M., Nazir M.S. and O'Kelly B.C., Evolution of hydraulic conductivity models for sandy soils, Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 173, (2), 2020, p97 - 114
O'Kelly B.C., Vardanega P.J., Haigh S.K., Bicalho K.V., Fleureau J.-M. and Cui Y.-J., Discussion: Use of fall cones to determine Atterberg limits: a review, Géotechnique, 70, (7), 2020, p652 - 654
Li W., O'Kelly B.C., Yang M. and Fang K., Compressibility behaviour and properties of peaty soils from Dian-Chi Lake area, China, Engineering Geology, 277, (Article 105778), 2020, p1-12
Mulvihill, N. (Neilus), An Exploratory Analysis of Using Polyhydroxybutrate (PHB) as a Method of Soil Remediation - A Laboratory Investigation, (Principal supervisor: B.C. O'Kelly), MAI thesis, University of Dublin, Trinity College Dublin, 2020
Soltani A., Taheri A., Deng A. and O'Kelly B.C., Improved geotechnical behavior of an expansive soil amended with tire-derived aggregates having different gradations, Minerals, 10, (10), 2020, p20 (article 923)
Zomorodian S.M.A., Soleymani A. and O'Kelly B.C., Improving erosion resistance of sand using nano-silica additive, Proceedings of the Institution of Civil Engineers - Ground Improvement, 172, (1), 2019, p3 - 11
Zomorodian S.M.A., Ghaffari H. and O'Kelly B.C., Stabilisation of crustal sand layer using biocementation technique for wind erosion control, Aeolian Research, 40, 2019, p34 - 41
O'Kelly B.C. and Johnston P.M., Environmental geotechnics for peatland management and restoration, Ecology and Safety, 13, 2019, p1 - 15
Arshad M and O'Kelly B, Global status of wind power generation: theory, practice, and challenges, International Journal of Green Energy, 16, (14), 2019, p1073 - 1090
Gaughan, P. (Pádraig), Strain Rate Dependence of Undrained Shear Strength for a Peat Material - A Laboratory Investigation, (Principal supervisor: B.C. O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2019
O'Kelly B.C., Reappraisal of soil extrusion for geomechanical characterisation, Geotechnical Research, 6, (4), 2019, p265 - 287
O'Kelly B.C., Biodegradation of biosolids and specific gravity determination, Environmental Geotechnics, 6, (1), 2019, p47 - 61
O'Kelly B.C., Fallacy of wide undrained strength range at the Casagrande liquid limit, Geotechnical Research, 6, (3), 2019, p205 - 217
O'Kelly, B.C., Role of Geotechnics in Peatland Restoration and Management, Invited presentation delivered during the 28th International Conference on Ecology and Safety, Burgas, Bulgaria, 29th June, 2019, International Scientific Events (www.sciencebg.net), 11pp
Soltani A., Deng A., Taheri A. and O'Kelly B.C., Engineering reactive clay systems by ground rubber replacement and polyacrylamide treatment, Polymers, 11, (Article 1675), 2019, p23
O'Kelly, B.C., Fall-cone strength testing of municipal sludges and residues, Environmental Geotechnics, 5, (1), 2018, p18 - 30
O'Kelly, B.C., Comparing water contents of organic soil determined on the basis of different oven-drying temperatures, Invited presentation during technical session on Laboratory Testing at the China - Europe Conference on Geotechnical Engineering, Vienna, Austria, 14th August, 2018, 11pp
Arshad M. and O'Kelly B.C., Diagnosis of electricity crisis and scope of wind power in Pakistan, Proceedings of the Institution of Civil Engineers - Energy, 171, (4), 2018, p158 - 170
Khatami, H. and O'Kelly, B.C., Prevention of bleeding of particulate grouts using biopolymers, Construction and Building Materials, 192, (20 December 2018), 2018, p202 - 209
O'Kelly, B.C., Geotechnical laboratory testing and data interpretation for biosolids and sewage sludge, Geotechnical Research, 5, (4), 2018, p247 - 261
Vardanega, P.J., O'Kelly, B.C., Haigh, S.K. and Shimobe, S., Classifying and characterising fine-grained soils using fall cones, ce/papers, 2, (2-3), 2018, pp821 - 826
O'Kelly B.C., Vardanega P.J. and Haigh S.K., Use of fall cones to determine Atterberg limits: a review, Géotechnique, 68, (10), 2018, p843 - 856
O'Kelly, B.C. and Li, W., Comparing water contents of organic soil determined on the basis of different oven-drying temperatures, Proceedings of the China - Europe Conference on Geotechnical Engineering (Springer Series in Geomechanics and Geoengineering), Vienna, Austria, 13-16th August 2018, edited by Wu W. and Yu H.-S. , 1, Springer, Cham, Switzerland, 2018, pp586 - 590
O'Kelly B.C., Corrigendum: Biodegradation of biosolids and specific gravity determination, Environmental Geotechnics, 5, (1), 2018, p63 - 63
O'Kelly B.C., Vardanega P.J. and Haigh S.K., Corrigendum: Use of fall cones to determine Atterberg limits: a review, Géotechnique, 68, (10), 2018, p935 - 935
Amin M., Zomorodian S.M.A. and O'Kelly B.C., Reducing the hydraulic erosion of sand using microbial-induced carbonate precipitation, Proceedings of the Institution of Civil Engineers - Ground Improvement, 170, (2), 2017, p112 - 122
O'Kelly B.C., Measurement, interpretation and recommended use of laboratory strength properties of fibrous peat, Geotechnical Research, 4, (3), 2017, p136 - 171
Arshad, M. and O'Kelly, B.C., Model studies on monopile behavior under long-term repeated lateral loading, International Journal of Geomechanics, ASCE, 17, (1), 2017, p12
Zomorodian S.M.A., Shabnam M., Armina S. and O'Kelly B.C., Strength enhancement of clean and kerosene-contaminated sandy lean clay using nanoclay and nanosilica as additives, Applied Clay Science, 140, (May 2017), 2017, p140 - 147
Zhang L., O'Kelly B.C. and Nagel T., Tensile and compressive contributions of fibres in peat, Poromechanics VI: Proceedings of the Sixth Biot Conference on Poromechanics, Champs-sur-Marne, Paris, France, 9-13th July 2017, edited by Vandamme M., Dangla P., Pereira J-M. and Ghabezloo S. , American Society of Civil Engineers: Reston, Virginia, USA, 2017, pp1466 - 1473
Cui L., Bhattacharya S. and O'Kelly B.C., Discussion: Soil-monopile interactions for offshore wind turbines, Proceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics, 170, (4), 2017, p174 - 176
Arshad, M. and O'Kelly, B.C., Reducing monopile rotation under lateral loading in sandy soils, Geomechanics and Geoengineering, 12, (1), 2017, p14 - 27
Zhang L (Lin), Undrained Triaxial Experimental Investigations and Hyperviscoplastic Modelling of Peat Materials, (Principal supervisor: B.C O'Kelly), University of Dublin, Trinity College Dublin, 2017
Manafighorabaei, S. (Seyedmasoud), Soil Plasticity Determination Using Manafi Method and Apparatus , (Principal supervisor: B.C O'Kelly), University of Dublin, Trinity College Dublin, 2017
O'Kelly B.C., Geotechnics of municipal sludges and residues for landfilling, Geotechnical Research, 3, (4), 2016, p148 - 179
Noor Muneerah PG Haji Jeludin, D.K., Sivakumar, V., O'Kelly B.C. and Mackinnon P.A., Experimental observations of settlement of footings supported on soft clay reinforced with granular columns: laboratory model study, Geotechnical and Geoenvironmental Engineering, 142, (1), 2016, p15
Garzón, E., Cano, M., O`Kelly, B.C. and Sánchez-Soto, P.J., Effect of lime on stabilization of phyllite clays, Applied Clay Science, 123, (April 2016), 2016, p329 - 334
O'Kelly, B.C., Arshad, M., Offshore wind turbine foundations - analysis and design, Offshore Wind Farms: Technologies, Design and Operation, 2016, p589-610
Arshad M. and O'Kelly B.C., Analysis and design of monopile foundations for offshore wind-turbine structures, Marine Georesources and Geotechnology, 34, (6), 2016, p503 - 525
B.C. O'Kelly, M. Arshad, Offshore wind turbine foundations " analysis and design, Offshore Wind Farms, 2016, p589--610
O'Kelly, B.C., Assessing the shear strength of municipal sludges and residues for landfill disposal, Proceedings of the Third Symposium on Urban Mining and Circular Economy (SUM2016), Bergamo, Italy, 23-25th May 2016, edited by Cossu R and Lavagnolo MC , CISA Publisher: Italy, 2016, pp11
Chapter 20: Offshore wind turbine foundations - analysis and design in, editor(s)Ng, C. and Ran, L. , Offshore Wind Farms: Technologies, Design and Operation, Cambridge, UK, Woodhead Publishing (Elsevier), 2016, pp589 - 610, [O'Kelly, B.C. and Arshad, M.]
Sivakumar, V., O'Kelly, B.C., Henderson, L., Moorhead, C., Chow, S.H. and Barnes G.E., Discussion: Measuring the plastic limit of fine soils: an experimental study, Proceedings of the Institution of Civil Engineers, Geotechnical Engineering, 169, (1), 2016, p83 - 85
Arshad, M. and O'Kelly, B.C., Piled-cruciform attachment to monopile head reduces deflection, Proceedings of the Institution of Civil Engineers, Geotechnical Engineering, 169, (4), 2016, p321 - 335
O'Kelly B.C., Laboratory permeability determinations for biosolids, Environmental Geotechnics, 3, (3), 2016, p132 - 139
Johnston P.M. and O'Kelly B.C., Importance of environmental geotechnics, Environmental Geotechnics, 3, (6), 2016, p356 - 358
O'Kelly B.C., Atterberg limits and peat, Environmental Geotechnics, 3, (6), 2016, p359 - 363
Sivakumar, V., O'Kelly, B.C., Henderson, L., Moorhead, C., Chow, S.H., Haigh S.K. and Vardanega P.J., Discussion: Measuring the plastic limit of fine soils: an experimental study, Proceedings of the Institution of Civil Engineers, Geotechnical Engineering, 169, (1), 2016, p86 - 89
Shahrokhi-Shahraki R., Zomorodian S.M.A., Niazi A. and O'Kelly B.C., Improving sand with microbial-induced carbonate precipitation, Proceedings of the Institution of Civil Engineers, Ground Improvement , 168, (3), 2015, p217 - 230
Donegan, C. (Conor), The Design and Testing of a Foundation Prototype under Repeated Lateral Load for Offshore Wind Turbines, (Principal supervisor: B.C O'Kelly), MAI thesis, University of Dublin, Trinity College Dublin, 2015
Chapter 11: Case studies of vacuum consolidation ground improvement in peat deposits in, editor(s)Indraratna B., Chu J. and Rujikiatkamjorn C. , Ground Improvement Case Histories (1st edn.): Embankments with Special Reference to Consolidation and Other Physical Methods, Kidlington, Oxford, UK, Butterworth-Heinemann (Elsevier), 2015, pp315 - 345, [O'Kelly B.C. ]
O'Kelly B.C., Atterberg limits are not appropriate for peat soils, Geotechnical Research, 2, (3), 2015, p123 - 134
Zhang L. and O'Kelly B.C., Effect of salt grain additions on fibrous peat consolidation, Proceedings of the Institution of Civil Engineers, Ground Improvement, 168, (1), 2015, p14 - 21
Arshad, M. (Muhammad), Model Studies on Monopile Foundation Systems Under Long-Term Repeated Lateral Loads, (Principal supervisor: B.C. O'Kelly), PhD thesis, University of Dublin, Trinity College Dublin, 2015
Garzón E, Cano M, O'Kelly BC and Sánchez-Soto PJ, Phyllite clay-cement composites having improved engineering properties and material applications, Applied Clay Sciences, 114, (September 2015), 2015, p229 - 233
Aminpour M. and O'Kelly B.C., Applications of biopolymers in dam construction and operation activities, Proceedings of the Second International Dam World Conference (DW2015), LNEC, Lisbon, Portugal, 21st-24th April 2015, edited by Pina C., Portela E., Caldeira L., Batista A., Dias I. and Santos R. , 1, 2015, pp937 - 946
Igoe D.J.P., Gavin K.G. and O'Kelly B.C., The influence of residual loads on the axial load-displacement response of piles in sand, Transportation Research Board 94th Annual Meeting, Washington, DC, USA, 11-15th January 2015, Paper Number 15-1751, Transportation Research Board, Washington, DC, 2015, pp17
O'Kelly, B.C., Case studies of Vacuum Consolidation Ground Improvement in Peat Deposits, Ground Improvement Case Histories: Embankments with Special Reference to Consolidation and Other Physical Methods, 2015, p315-345
Sivakumar V., O'Kelly B.C., Henderson L., Moorhead C. and Chow S.H., Measuring the plastic limit of fine soils: an experimental study, Proceedings of the Institution of Civil Engineers, Geotechnical Engineering, 168, (1), 2015, p53 - 64
O'Kelly B.C., Effective stress strength testing of peat, Environmental Geotechnics, 2, (1), 2015, p33 - 44
Zhang L., O'Kelly B.C. and Nagel T., Undrained triaxial relaxation tests on a fibrous peat, Proceedings of the International Conference on Creep and Deformation Characteristics in Geomaterials, Gothenburg, Sweden, 24-25th August 2015, edited by Dijkstra J., Karstunen M., Gras J.-P. and Karlsson M. , 1, Chalmers University of Technology, Gothenburg, Sweden, 2015, pp89 - 93
Beirne, P. (Pearse), The Engineering of Floating Roads over Peatlands, (Principal supervisor: B.C O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2015
Zhang L. and O'Kelly B.C., Introduction of a thermodynamically hyperelastic model for peat, Numerical Methods in Geotechnical Engineering - Proceedings of the 8th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE 2014), Delft, The Netherlands, 18th-20th June 2014, edited by Hicks M.A., Brinkgreve R.B.J. and Rohe A. , 1, CRC Press, 2014, pp133 - 137
O'Kelly B.C., CPT testing in Dublin Boulder Clay, Proceedings of the Third International Symposium on Cone Penetration Testing (CPT'14), Las Vegas, Nevada, USA, 12th-14th May, 2014, edited by P.K. Robertson and K. Cabal , Paper no. 2-50, (1), Omnipress: Madison, WI, USA, 2014, pp761 - 768
O'Kelly B.C. and Pichan S.P., Effect of decomposition on physical properties of fibrous peat, Environmental Geotechnics, 1, (1), 2014, p22 - 32
O'Kelly B.C., Characterisation and undrained strength of amorphous clay , Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 167, (3), 2014, p311 - 320
Griffin H. and O'Kelly B.C., Sustainability of combined vacuum and surcharge preloading, Proceedings of the 2014 Geo-Congress: Geo-Characterization and Modeling for Sustainability, Atlanta, Georgia, USA, 23-26 February 2014, edited by Abu-Farsakh M., Yu X. and Hoyos L.R. , GSP 234, American Society of Civil Engineers, Reston, VA, USA, 2014, pp3826 - 3835
Zhang L. and O'Kelly B.C., Introduction of a thermodynamically hyperelastic model for peat, Invited presentation during technical session on Constitutive Modelling at the 8th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE 2014), Delft, The Netherlands, 19th June, 2014, 15pp
O'Kelly B.C. and Sivakumar V., Water content determinations for peat and other organic soils using the oven-drying method, Drying Technology: An International Journal, 32, (6), 2014, p631 - 643
Zhang L. and O'Kelly B.C., The principle of effective stress and triaxial compression testing of peat, Proceedings of the Institution of Civil Engineers, Geotechnical Engineering, 167, (1), 2014, p40 - 50
Khatami, H.R. (Hamid Reza), Application of Biopolymers in Soil Improvement by Grouting, (Principal supervisor: B.C O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2014
O'Kelly B.C. and Orr T.L.L., Effective-stress strength of peat in triaxial compression, Proceedings of the Institution of Civil Engineers, Geotechnical Engineering, 167, (5), 2014, p417 - 420
O'Kelly B.C., Closure to Discussion by K. Prakash and A. Sridharan of "Atterberg limits and remolded shear strength-water content relationships" [Geotechnical Testing Journal, Vol. 36, No. 6, pp. 939-947], Geotechnical Testing Journal, 37, (4), 2014, p729 - 731
O'Kelly B.C., Brinkgreve R.B.J. and Sivakumar V., Pullout resistance of granular anchors in clay for undrained condition, Soils and Foundations, 54, (6), 2014, p1145 - 1158
Arshad M. and O'Kelly B.C., Use of miniature soil stress measuring cells under repeating loads, Proceedings of the Second International Conference on Information Technology in Geo-Engineering (ICITG 2014), Durham, UK., 21st-22nd July 2014, edited by Toll D.G., Zhu H., Osman A., Coombs W., Li X. and Rouainia M. , IOS Press, Amsterdam, The Netherlands, 2014, pp177 - 182
Griffin H. and O'Kelly B.C., Ground improvement by vacuum consolidation - a review, Proceedings of the Institution of Civil Engineers, Ground Improvement, 167, (4), 2014, p274 - 290
O'Kelly B.C., Drying temperature and water content-strength correlations, Environmental Geotechnics, 1, (2), 2014, p81 - 95
Zhang L. and O'Kelly B.C., Introduction of a thermodynamically hyperelastic model for peat, Poster presentation at the 8th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE 2014), Delft, The Netherlands, 18th-20th June, 2014
Sivakumar V., O'Kelly B.C., Moorhead C., Madhav M.R. and Mackinnon P.A., Effectiveness of granular columns in containing settlement, Proceedings of the Institution of Civil Engineers, Geotechnical Engineering, 167, (4), 2014, p371 - 379
Arshad M. and O'Kelly B.C., Development of a rig to study model pile behaviour under repeating lateral loads, International Journal of Physical Modelling in Geotechnics, 14, (3), 2014, p54 - 66
O'Kelly B.C., Undrained shear strength-water content relationship for sewage sludge, Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 166, (6), 2013, p576 - 588
O'Kelly B.C. and Zhang L., Consolidated-drained triaxial compression testing of peat, ASTM Geotechnical Testing Journal, 36, (3), 2013, p310 - 321
O'Kelly B.C. and Pichan S.P., Effects of decomposition on the compressibility of fibrous peat - A review, Geomechanics and Geoengineering, 8, (4), 2013, p286 - 296
Igoe D.J.P., Gavin K.G., O'Kelly B.C. and Byrne B., The use of in-situ site investigation techniques for the axial design of offshore piles, Proceedings of the Fourth International Conference on Geotechnical and Geophysical Site Characterization (ISC'4), Pernambuco, Brazil, 18-21 Sept., 2012, edited by R.Q. Coutinho and P.W. Mayne , 2, Taylor & Francis Group, 2013, pp1123 - 1129
Pichan S.P. and O'Kelly B.C., Stimulated decomposition in peat for engineering applications, Proceedings of the Institution of Civil Engineers - Ground Improvement, 166, (3), 2013, p168 - 176
Pichan, S.P. (Som Pong), The Effects of Decomposition on the Compressibility Behaviour of Fibrous Peat, (Principal supervisor: B.C. O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2013
O'Kelly B.C., Discussion of "Enhancement of the Shear Strength of Wastewater Residuals Using Industrial Waste By-Products" by C. Kayser, T. Larkin, and N. Singhal, ASCE Journal of Environmental Engineering, 139, (2), 2013, p312 - 315
Zhang L. and O'Kelly B.C., Constitutive models for peat - A review, Computational Plasticity XII: Fundamentals and Applications - Proceedings of the 12th International Conference on Computational Plasticity - Fundamentals and Applications (COMPLAS 2013), Barcelona, Spain, 3-5 September 2013, edited by E. Oñate, D.R.J. Owen, D. Peric and B. Suárez , International Center for Numerical Methods in Engineering (CIMNE), Barcelona, Spain, 2013, pp1294 - 1304
O'Kelly, B.C., and Zhang, L., Effective stress testing of peat, E.T. Hanrahan Memorial Symposium, Department of Civil, Structural and Environmental Engineering, University College Dublin, Dublin, Ireland, 11th September 2013, 2013, pp12
O'Sullivan, C. (Carl), Simple Shear Testing of Peat Soils, (Principal supervisor: B.C O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2013
O'Kelly B.C., Sivakumar V. and Brinkgreve R.B.J., Uplift resistance of granular anchors in clay under undrained condition (Extended abstract), Proceedings of the First Workshop on Soil-Structure Interaction organised by the Marie Curie IAPP project NOTES, Trinity College Dublin, Dublin, 22nd February, 2013, pp2
O'Kelly B.C., Sivakumar V. and Brinkgreve R.B.J., Uplift resistance of granular anchors in clay under undrained condition, Invited presentation at the 1st Workshop on Soil-Structure Interaction, Trinity College Dublin, Dublin, 22nd February, 2013, Marie Curie IAPP project NOTES, 9pp
Zhang, L. (Lin), The Applicability of the Principle of Effective Stress in Peat Materials, (Principal supervisor: B.C. O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2013
Arshad M. and O'Kelly B.C., Offshore wind-turbine structures: a review, Proceedings of the Institution of Civil Engineers, Energy. Themed issue on wind turbine foundations., 166, (4), 2013, p139 - 152
O'Kelly B.C., Atterberg limits and remolded shear strength-water content relationships, ASTM Geotechnical Testing Journal, 36, (6), 2013, p939 - 947
Igoe D., Gavin K. and O'Kelly B., An investigation into the use of push-in pile foundations by the offshore wind sector, International Journal of Environmental Studies. Special Issue: Renewable Energies and Smart Grid - The Solution for Tomorrow's Energy, 70, (5), 2013, p777 - 791
Zhang L. and O'Kelly B.C., Constitutive models for peat - A review (Extended abstract), Computational Plasticity XII: Fundamentals and Applications - Proceedings of the 12th International Conference on Computational Plasticity - Fundamentals and Applications (COMPLAS 2013), Barcelona, Spain, 3-5 September 2013, edited by E. Oñate, D.R.J. Owen, D. Peric and B. Suárez , International Center for Numerical Methods in Engineering (CIMNE), Barcelona, Spain, 2013, pp1
Sivakumar V., O'Kelly B.C., Madhav M.R., Moorhead C. and Rankin B., Granular anchors under vertical loading/axial pull, Canadian Geotechnical Journal, 50, (2), 2013, p123 - 132
Khatami H.R. and O'Kelly B.C., Improving mechanical properties of sand using biopolymers, ASCE Journal of Geotechnical and Geoenvironmental Engineering, 139, (8), 2013, p1402 - 1406
Doherty P., Kirwan L., Gavin K., Igoe D., Tyrrell S., Ward D., and O'Kelly B., Soil properties at the UCD geotechnical research site at Blessington, Proceedings of the Bridge and Concrete Research in Ireland Conference (BCRI 2012), Dublin, Ireland, 6th-7th September, 1, 2012, pp499 - 504
Osorio-Salas, J.P. (Juan Pablo), Vacuum Consolidation Field Test on a Pseudo-Fibrous Peat, (Principal supervisor: B.C. O'Kelly), PhD thesis, University of Dublin, Trinity College Dublin, 2012
Farrell E.R., O'Kelly B.C. and Osorio-Salas J.P., Vacuum Consolidation in Peat, Invited Presentation (Continuing Professional Development Lecture), Geotechnical Society of Ireland, Institution of Engineers of Ireland (Engineers Ireland), Dublin, Ireland, 09th February 2012, 2012, Geotechnical Society of Engineers Ireland , Powerpoint presentation 65pp
Pichan S.P. and O'Kelly B.C., Effect of decomposition on the compressibility of fibrous peat, GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering, Oakland, California, USA, 25th-29th March, edited by Hryciw R.D., Athanasopoulos-Zekkos A. and Yesiller N. , (GSP 225), American Society of Civil Engineers: Reston, VA, USA, 2012, pp4329 - 4338
O'Kelly B.C., Effects of aluminum sulfate and polyelectrolyte solutions on the geotechnical properties of organic clay, Soils and Foundations, 51, (2), 2011, p359 - 367
Barnes G.E. and O'Kelly B.C., Discussion: An apparatus for the plastic limit and workability of soils, Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 164, (4), 2011, p293 - 294
O'Kelly B.C., Mesri G., and Peck R.B., Discussion of "A new method of measuring plastic limit of fine materials" by V. Sivakumar, D. Glynn, P. Cairns and J.A. Black (2009). Géotechnique 59, No. 10, pp. 813-823, Géotechnique, 61, (1), 2011, p88 - 92
Igoe D.J.P., Gavin K.G. and O'Kelly B.C., Shaft capacity of open-ended piles in sand, ASCE Geotechnical and Geoenvironmental Engineering, 137, (10), 2011, p903 - 913
Sivakumar, V., Glynn, D., Cairns, P., Black, J.A., O'Kelly, B.C., A new method of measuring plastic limit of fine materials, Geotechnique, 61, (1), 2011, p88-89
Osorio J.P., Farrell E.R. and O'Kelly B.C., Peat improvement under vacuum preloading: A novel approach for bog roads in Ireland, Invited presentation at the Joint Symposium on Bridge and Infrastructure Research in Ireland and Concrete Research in Ireland (BCRI 2010), Cork, Ireland, 2nd-3rd September, 2010
O'Kelly B.C. and Quille M.E., Shear strength properties of water treatment residues, Proceedings of the Institution of Civil Engineers, Geotechnical Engineering, 163, (GE1), 2010, p23 - 35
O'Kelly B., Solid grounding - the future of geotechnical engineering, The Engineers Journal, Journal of the Institution of Engineers of Ireland, 64, (Spring), 2010, p2
Quille M.E. (Michael), A Study of the Geotechnical Properties of Municipal Water Treatment Residues Generated in Ireland, (Principal supervisor: B.C O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2010
Osorio J.P., Farrell E.R. and O'Kelly B.C., Peat improvement under vacuum preloading: A novel approach for bog roads in Ireland, Proceedings of the Joint Symposium on Bridge and Infrastructure Research in Ireland and Concrete Research in Ireland (BCRI 2010), Cork, Ireland, 2nd-3rd September, 1, 2010, pp255 - 262
Quille M.E. and O'Kelly B.C., Geotechnical properties of zinc/lead mine tailings from Tara Mines, Ireland, Proceedings 2010 GeoShanghai International Conference - Geoenvironmental Engineering and Geotechnics: Progress in Modeling and Applications, Shanghai, China, 3rd-5th June, edited by Q. He and S-L. Shen , (GSP 204), American Society of Civil Engineers, 2010, pp111 - 117
O'Kelly B.C., Landfill disposal of alum water treatment residues: some pertinent geoengineering properties, Residuals Science and Technology, 7, (2), 2010, p95 - 113
Igoe D., Gavin K. and O'Kelly B., Field tests using an instrumented model pipe pile in sand, Proceedings of the Seventh International Conference on Physical Modelling in Geotechnics (ICPMG 2010), Zurich, Switzerland, 28th June-1st July, edited by S. Springman, J. Laue and L. Seward , 2010, pp775 - 780
Walsh, Eoin, Vacuum Consolidation of Fibrous Peat, (Principal supervisor: B.C O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2009
O'Kelly B., Orr T. and Farrell E., Fifty years of teaching, research and innovation in geotechnical engineering at Trinity College Dublin, Ground Engineering, 42, (4), 2009, p31 - 34
O'Kelly B.C., Geo-engineering Properties of Municipal Treatment Plant Sludges, Invited Presentation (Continuing Professional Development Lecture), Geotechnical Society of Engineers Ireland, Dublin, Ireland, 05th March 2009, 2009, Geotechnical Society of Ireland, Institution of Engineers of Ireland (Engineers Ireland), 39pp
O'Kelly B.C., Development of a large consolidometer apparatus for testing peat and other highly organic soils, SUO - Mires and Peat, 60, (1-2), 2009, p23 - 36
O'Kelly B.C. and Naughton P.J., Study of the yielding of sand under generalized stress conditions using a versatile hollow cylinder torsional apparatus, Mechanics of Materials, 41, (3), 2009, p187 - 198
O'Kelly B., Farrell E. and Orr T., TCD's geotechnics research prioritises innovation and sustainability, The Engineers Journal, Journal of the Institution of Engineers of Ireland, 63, (3), 2009, p136 - 138
O'Kelly B.C. and Quille M.E., Compressibility and consolidation of water treatment residues, Proceedings of the Institution of Civil Engineers - Waste and Resource Management, 162, (WR2), 2009, p85 - 97
O'Kelly B., Orr T. and Farrell E., Geotechnical teaching and research reaches fifty year milestone at TCD, The Engineers Journal, Journal of the Institution of Engineers of Ireland, 63, (1), 2009, p26 - 27
Fitzpatrick H.P. and O'Kelly B.C., Discussion: Constant rate of displacement test on ultra-soft soil by M.W. Bo, K.S. Wong, and V. Choa, Proceedings of the Institution of Civil Engineers - Geotechnical Engineering 2009 162:6, 347-348, Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 162, (6), 2009, p347 - 348
O'Kelly B., Orr T. and Farrell E., Geotechnical teaching and research reaches fifty year milestone at TCD, The Engineers Journal, Journal of the Institution of Engineers of Ireland, 63, (1), 2009, p26 - 27
Gavin K.G., Adekunte A. and O'Kelly B.C., A field investigation of vertical footing response on sand, Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 162, (GE5), 2009, p257 - 267
Long, Aoife, Study of the Seasonal Drying of Peat Bunds, (Principal supervisor: B.C O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2009
McInerney, Gráinne P., Stability of Peat Embankments, (Principal supervisor: B.C O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2008
Igoe D.J.P., Gavin K.G. and O'Kelly B.C., Field measurements of the base resistance of pipe piles in medium dense sand, Proceedings of the Second BGA International Conference on Foundations (ICOF 2008), Dundee, Scotland, 24th-27th June, edited by Brown M.J., Bransby M.F., Brennan A.J. and Knappett J.A. , 1, 2008, pp149 - 158
O'Kelly B.C., Geo-engineering properties of granulated blast furnace slag, Proceedings of Innovative Geotechnical Engineering, International Conference on Geotechnical Engineering, Hammamet, Tunisia, 24th-26th March, edited by Bouassida M., Romdhane N.B. and Hamdi E. , 1, Sfax, Tunisie, 2008, pp249 - 257
O'Kelly B.C., Development of a large consolidometer-permeameter apparatus for testing soft soils, Proceedings, GeoCongress 2008: Characterization, Monitoring and Modeling of GeoSystems, New Orleans, Louisiana, USA, 9th-12th March, edited by A.N. Alshawabkeh, K.R. Reddy and M.V. Khire , 5, (GSP 179), American Society of Civil Engineers, 2008, pp60 - 67
O'Kelly B.C., Ward P.N. and Raybould M.J., Stabilisation of a progressive railway embankment slip, Geomechanics and Geoengineering, 3, (4), 2008, p231 - 244
O'Kelly B.C., On the geotechnical design and use of peat bunds in the conservation of bogs, Proceedings of the First International Conference on Geotechnical Engineering, Hammamet, Tunisia, 24th-26th March, edited by Bouassida M., Romdhane N.B. and Hamdi E. , 1, Sfax, Tunisie, 2008, pp259 - 267
O'Kelly B.C. and Naughton P.J., Measuring shear strain in a hollow cylinder apparatus using electrolevel-inclinometer gages, Proceedings of the Fourth International Symposium on Deformation Characteristics of Geomaterials (IS-Atlanta 2008), Atlanta, Georgia, USA, 21st-24th September, edited by S.E. Burns, P.W. Mayne and J.C. Santamarina , 2008, pp7
O'Kelly B.C., Development of a test method towards assessing the soundness of concrete aggregates in service, Proceedings of the Seventh International Congress on Concrete: Construction's Sustainable Option, Dundee, Scotland , 8th-10th July, 3, 2008, pp137 - 142
O'Kelly B.C., Study of the performance of natural gravel of marginal soundness in concrete, Proceedings of the Seventh International Congress on Concrete: Construction's Sustainable Option, Dundee, Scotland , 8th-10th July, 3, 2008, pp387 - 394
Beales S.P. and O'Kelly B.C., Performance of embankments on soft ground: A1033 Hedon Road Improvement Scheme, UK, Invited presentation at the First International Conference on Transportation Geotechnics, Nottingham, UK, 25th August, 2008
O'Kelly B.C., Ward P.N. and Raybould M.J., Slope stabilization of an embankment on the West Coast Main Line, UK, Invited presentation at the First International Conference on Transportation Geotechnics, Nottingham, UK, 26th August, 2008
O'Kelly B.C., Effect of biodegradation on the consolidation properties of a dewatered municipal sewage sludge, Waste Management, 28, (8), 2008, p1395 - 1405
O'Kelly B.C., Ward P.N. and Raybould M.J., Slope stabilization of an embankment on the West Coast Main Line, UK, Proceedings of the First International Conference on Transportation Geotechnics, Nottingham, UK, 25th-27th August, edited by E. Ellis, H-S. Yu, G. McDowell, A.R. Dawson, N. Thom , 1, 2008, pp335 - 341
Beales S.P. and O'Kelly B.C., Performance of embankments on soft ground: A1033 Hedon Road Improvement Scheme, UK, Proceedings of the First International Conference on Transportation Geotechnics, Nottingham, UK, 25th-27th August, edited by E. Ellis, H-S. Yu, G. McDowell, A.R. Dawson, N. Thom , 1, CRC Press/Balkema, Leiden, Netherlands, 2008, pp369 - 375
O'Kelly B.C. and Naughton P.J., Local measurements of the polar deformation response in a hollow cylinder apparatus, Geomechanics and Geoengineering, 3, (4), 2008, p217 - 229
O'Kelly B.C., Torrance A.A., West R.P., Burke M.J. and Boland F.M., Case study of an interdisciplinary problem-based engineering design course, Proceedings of the Sixth AECEF International Symposium on Civil Engineering Education in Changing Europe, Vilnius, Lithuania, 28th - 30th May, 2008, pp37 - 48
O'Kelly B.C. and Naughton P.J., Enhancement in the interface shear resistance achieved by novel geogrid with in-plane drainage, Proceedings, GeoCongress 2008: Geosustainability and Geohazard Mitigation, New Orleans, Louisiana, USA, 9th-12th March, (GSP 178), American Society of Civil Engineers, 2008, pp740 - 747
Osorio J.P., Farrell E.R., O'Kelly B.C. and Casey T., Rampart roads in the peat lands of Ireland: genesis, development and current performance, Invited presentation at the First International Conference on Transportation Geotechnics, Nottingham, UK, 25th August, 2008
O'Kelly B.C. and Naughton P.J., On the interface shear resistance of a novel geogrid with in-plane drainage capability, Geotextiles and Geomembranes, 26, (4), 2008, p357 - 362
Osorio J.P., Farrell E.R., O'Kelly B.C. and Casey T., Rampart roads in the peat lands of Ireland: genesis, development and current performance, Proceedings of the First International Conference on Transportation Geotechnics, Nottingham, UK, 25th-27th August, edited by E. Ellis, H-S. Yu, G. McDowell, A.R. Dawson, N. Thom , 1, Leiden, Netherlands : CRC Press/Balkema, 2008, pp227 - 233
O'Kelly B.C., Geotechnical properties of a municipal water treatment sludge incorporating a coagulant, Canadian Geotechnical Journal, 45, (5), 2008, p715 - 725
O'Kelly B.C. and Naughton P.J., Use of proximity transducers for local radial strain measurements in a hollow cylinder apparatus, Proceedings of the Fourth International Symposium on Deformation Characteristics of Geomaterials (IS-Atlanta 2008), Atlanta, Georgia, USA, 21st-24th September, edited by S.E. Burns, P.W. Mayne and J.C. Santamarina , 2008, pp8
O'Kelly B.C., Compressibility and permeability anisotropy of some peaty soils, Proceedings of the 60th Canadian Geotechnical Conference, Ottawa, Ontario, 21st-23rd October, 3, Canadian Geotechnical Society, 2007, pp1934 - 1939
McInerney, G.P., O'Kelly B.C. and Johnston P.M., Geotechnical stability of peat dams and embankments, Proceedings of the Soft Ground Engineering Seminar organised by Engineers Ireland, Portlaoise, Ireland, 15th-16th February, 2007, ppSection #2.6 (5 pages)
Johnson, M. (Mbakure), Determination of the Effective Stress Shear Strength Parameters for Limerick and Leixlip Waterworks Sludges, (Principal supervisor: B.C O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2007
Naughton P.J. and O'Kelly B.C., Stress non-uniformity in a hollow cylinder torsional sand specimen, Geomechanics and Geoengineering, 2, (2), 2007, p117 - 122
Gavin K.G. and O'Kelly B.C., Effect of friction fatigue on pile capacity in dense sand, Geotechnical and Geoenvironmental Engineering, 133, (1), 2007, p63 - 71
Hodgetts S.J., O'Kelly B.C. and Raybould M.J., Stabilisation of the Stanton Lees landslip using an embedded pile retaining wall, Geotechnical and Geological Engineering, 25, (6), 2007, p705 - 715
O'Kelly B.C., Johnston P.M. and Kussino G., Case study using LIDAR to measure the morphology of a bog, Invited presentation at the First International Conference on Environmental Management, Engineering, Planning and Economics (CEMEPE), Skiathos, Greece, 28th June, 2007
O'Kelly B.C., Some key factors considered by students in electing to study engineering, Proceedings of the First International Symposium for Engineering Education, Dublin, 17th-19th September, 1, 2007, pp57 - 63
O'Kelly B.C., Johnston, P.M. and Kussino, G., Case study using LIDAR to measure the morphology of a bog, Proceedings of the First International Conference on Environmental Management, Engineering, Planning and Economics (CEMEPE), Skiathos, Greece, 24th-28th June, 1, 2007, pp681 - 686
O'Kelly B.C., Case study of a problem-based bridge engineering design course, Proceedings of the First International Symposium for Engineering Education, Dublin, 17th-19th September, 1, 2007, pp91 - 96
O'Kelly B.C., Compression and consolidation anisotropy of some soft soils, Geotechnical and Geological Engineering, 24, (6), 2006, p1715 - 1728
Problem-oriented, project-based education in civil engineering in, editor(s)Manoliu I. , Inquiries into European Higher Education in Civil Engineering (Theme B, Specific Project 5, European Civil Engineering Education and Training Thematic Network Project, EUCEET II), Vol. 6, Romania, Independent Film, 2006, pp30 - 47, [Federau M. et al. (O'Kelly B.C. Working Group member)]
O'Kelly B.C., Hodgetts S.J. and Leung T.H.F., Stabilisation of Stanton Lees landslip using pile retaining wall solution, Proceedings of the Third National Symposium on Bridge and Infrastructure Research in Ireland, Dublin, 12th-13th October, 1, 2006, pp233 - 242
O'Kelly B.C., Hodgetts S.J. and Leung T.H.F., Stabilisation of Stanton Lees landslip using pile retaining wall solution, Invited presentation at the Third National Symposium on Bridge and Infrastructure Research in Ireland, Dublin, 12th October, 2006
Gavin K.G., Chatta I. and O'Kelly B.C., Field measurements of horizontal stress on an instrumented pile in sand, Proceedings, GeoCongress 2006: Geotechnical Engineering in the Information Technology Age, Atlanta, Georgia, USA, 26th Feb-1st March, edited by DeGroot D.J., DeJong J.T., Frost D. and Baise L.G. , 2006, American Society of Civil Engineers, 2006, pp81 - 86
McInerney G.P., O'Kelly B.C. and Johnston P.M., Geotechnical aspects of peat dams on bog land, Proceedings of the 5th International Congress on Environmental Geotechnics, Cardiff, 26th-30th June, edited by Thomas, HR , 2, Thomas Telford, London, 2006, pp934 - 941
O'Kelly B.C., Geotechnical properties of two granulated blast furnace slag materials, Proceedings of the Third National Symposium on Bridge and Infrastructure Research in Ireland, Dublin, 12th-13th October, 1, 2006, pp121 - 128
O'Kelly B.C., Geotechnical properties of municipal sewage sludge, Geotechnical and Geological Engineering, 24, (4), 2006, p833 - 850
Igoe D., Gavin K., O'Kelly B. and Gallagher D., Base resistance of an open-ended pile installed in medium dense sand, Proceedings of the Third National Symposium on Bridge and Infrastructure Research in Ireland, Dublin, 12th-13th October, 1, 2006, pp243 - 250
O'Kelly B.C., Compressibility and seepage properties of peats, Invited presentation at the 15th Irish Environmental Researchers' Colloquium (Environ05), Sligo, Ireland, 29th January, 2005
Naughton P.J. and O'Kelly B.C., Yield behavior of sand under generalized stress conditions, Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering (ICSMGE), Osaka, Japan, 12th-16th September, 2, 2005, pp555 - 558
O'Kelly B.C. and Naughton P.J., Engineering properties of wet-pluviated hollow cylindrical specimens, Geotechnical Testing Journal, 28, (6), 2005, p570 - 576
O'Kelly B.C., Mechanical properties of dewatered sewage sludge, Waste Management , 25, (1), 2005, p47 - 52
Gavin K., O'Kelly B., Adekunte A., Casey B. and Donohue S., Use of the Cone Penetration Test to derive parameters for shallow foundation design, Proceedings of the International Conference on Soil-Structure Interaction: Calculation Methods and Engineering Practice, Saint Petersburg, 26th-28th May, 1, 2005, pp455 - 460
O'Kelly B.C., Consolidation and drying properties of sewage sludge, Proceedings of the 15th Irish Environmental Researchers' Colloquium (Environ05), Sligo, Ireland, 28-30th January, 2005, pp23-
O'Kelly B.C., Consolidation and drying properties of sewage sludge, Invited presentation at the Geotechnical Society of Ireland Research Seminar, Dublin, 14th March, 2005
O'Kelly B.C. and Naughton P.J., Closed-loop control of a hollow cylinder apparatus, Proceedings of Symposium on Innovative Experimental Techniques, Joint ASCE/ASME/SES Conference on Mechanics and Materials (McMat 2005), Baton Rouge, Louisiana , 1st-3rd June, 2005, pp6
O'Kelly B.C., Compressibility of some peats and organic soils, Proceedings of the International Conference on Problematic Soils, Famagusta, North Cyprus, 25th-27th May 2005, edited by Bilsel H and Zalihe N , 3, Eastern Mediterranean University Press, 2005, pp1193 - 1202
O'Kelly B.C., Yield behavior of sand under generalized stress conditions, Poster presentation at the 16th International Conference on Soil Mechanics and Geotechnical Engineering (ICSMGE), Osaka, Japan, 13th September , 2005
O'Kelly B.C., Consolidation properties of a dewatered municipal sewage sludge, Canadian Geotechnical Journal, 42, (5), 2005, p1350 - 1358
O'Kelly B.C., Consolidation and drying properties of sewage sludge, Invited presentation at the 15th Irish Environmental Researchers' Colloquium (Environ05), Sligo, Ireland, 29th January, 2005
Naughton P.J. and O'Kelly B.C., Stress non-uniformity in hollow cylindrical test specimens, Proceedings of Symposium on Innovative Experimental Techniques, Joint ASCE/ASME/SES Conference on Mechanics and Materials (McMat 2005), Baton Rouge, Louisiana, 1st-3rd June, 2005, pp6
Naughton P.J. and O'Kelly B.C., The yield behavior of Leighton Buzzard sand in a hollow cylinder apparatus, Proceedings, GeoFrontiers 2005, Austin, Texas, USA, 24th-26th January, edited by P.W. Mayne, E. Rathje, J. DeJong, A. Rechenmacher, J. Yamamuro, S. Sharma and C. Willson , (GSP 138), 2005, pp2343 - 2352
Naughton P.J. and O'Kelly B.C., The yield behavior of Leighton Buzzard sand in a hollow cylinder apparatus, Poster presentation, Geo-Frontiers 2005, Austin, Texas, USA, 24th-26th January, 2005
Creaven, P. (Paul), Interface Friction of Geotextiles and Other Construction Materials, (Principal supervisor: B.C O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2005
O'Kelly B.C. and Naughton P.J., Development of a new hollow cylinder apparatus for stress path measurements over a wide strain range, Geotechnical Testing Journal, 28, (4), 2005, p345 - 354
O'Kelly B.C., New method to determine the true water content of organic soils, Geotechnical Testing Journal, 28, (4), 2005, p365 - 369
O'Kelly B.C., Use of the Cone Penetration Test to derive parameters for shallow foundation design, Invited presentation at the International Conference on Soil-Structure Interaction: Calculation Methods and Engineering Practice, Saint Petersburg, 28th May, 2005
O'Kelly B.C., Compressibility and seepage properties of peats, Proceedings of the 15th Irish Environmental Researchers' Colloquium (Environ05), Sligo, Ireland, 28-30th January, 2005, pp7-
O'Kelly B.C., Yield behavior of sand under generalized stress conditions, Invited presentation at the 16th International Conference on Soil Mechanics and Geotechnical Engineering (ICSMGE), Osaka, Japan, 13th September, 2005
O'Kelly B.C., Oven-drying characteristics of soils of different origins, Drying Technology, 23, (5), 2005, p1141 - 1149
O'Kelly B.C., Method to compare water content values determined on the basis of different oven drying temperatures, Géotechnique, 55, (4), 2005, p329 - 332
O'Kelly B.C., Consolidation anisotropy of some natural soft soils, Proceedings of the International Conference on Problematic Soils, Famagusta, North Cyprus, 25th-27th May 2005, edited by Bilsel H and Zalihe N , 3, Eastern Mediterranean University Press, 2005, pp1183 - 1192
O'Kelly B.C., Sewage sludge to landfill: some pertinent engineering properties, Journal of the Air and Waste Management Association, 55, (6), 2005, p765 - 771
O'Kelly B.C., Geotechnical aspects of sewage sludge monofills, Proceedings of the Institution of Civil Engineers - Municipal Engineer, 157, (3), 2004, p193 - 197
O'Kelly B.C., Accurate determination of moisture content of organic soils using the oven drying method, Drying Technology, 22, (7), 2004, p1767 - 1776
Naughton P.J. and O'Kelly B.C., The induced anisotropy of Leighton Buzzard sand, Proceedings of Advances in Geotechnical Engineering: The Skempton Conference, London, 28th-31st March, edited by Jardine R.J., Potts D.M., Higgins K.G. , 1, 2004, pp556 - 567
Naughton P.J. and O'Kelly B.C., The anisotropy of Leighton Buzzard sand under general stress conditions, Proceedings of the Third International Symposium on Deformation Characteristics of Geomaterials (IS Lyon03), Lyon, 22th-24th September, edited by Di Benedetto H., Doanh T., Geoffroy H., Sauzeatvol C. , 1, 2003, pp285 - 291
O'Kelly B.C. and Naughton P.J., Development of a new hollow cylinder apparatus for generalised stress path testing, Ground Engineering, 36, (7), 2003, p26 - 28
Assghair, A.A. (Assedik), Consolidation Properties and Behaviour of Some Soft Soils , (Principal supervisor: B.C O'Kelly), MSc thesis, University of Dublin, Trinity College Dublin, 2003
Naughton P.J. and O'Kelly B.C., The anisotropy of Leighton Buzzard sand under general stress conditions, Poster presentation at the 3rd International Symposium on Deformation Characteristics of Geomaterials (IS Lyon03), Lyon, 22th-24th September, 2003
O'Kelly B.C., Development of the University College Dublin hollow cylinder apparatus, Invited presentation at the 56th Canadian Geotechnical Conference, Winnipeg, Ontario, 1st October, 2003
O'Kelly B.C. and Naughton P.J., Development of the University College Dublin hollow cylinder apparatus, Proceedings of the 56th Annual Canadian Geotechnical Conference, Winnipeg, Ontario, 29th Sept - 01st Oct, 2003
Naughton P.J. and O'Kelly B.C., An overview of the University College Dublin hollow cylinder apparatus, Invited presentation at the 14th ISSMGE Young European Geotechnical Engineer's Conference, Sofia, 15th-19th September, 2001
Naughton P.J. and O'Kelly B.C., An overview of the University College Dublin hollow cylinder apparatus, Proceedings of the 14th ISSMGE Young European Geotechnical Engineer's Conference, Sofia, 15th-19th September, 1, 2001, pp101 - 110
O'Kelly B.C., Development of a New Apparatus for Hollow Cylinder Testing, PhD thesis, University College Dublin (Supervisor Dr. T.F. Widdis; Extern Prof. David Muir Wood), 2001
O'Kelly B.C., Mechanical Properties and Slope Stability of Dewatered Digested Sewage Sludge, M.Eng.Sc. thesis (Supervisor Dr. T.F. Widdis; Extern Prof. A. Coul), University College Dublin, 1995
Non-Peer-Reviewed Publications
Main Conveners, A. Assadi-Langroudi and S. Donyavi; Co-conveners, B.C. O'Kelly, M. Mirzababaei and S. Ghadr, Workshop on Nature Inspired Solutions for the built Environment (NISE 1): integrated natural and engineered systems, 11-12 February 2021, 2021, Online event organised by Emerging Geohazards Research Group, University of East London, London, UK
O'Kelly, B.C., Recent Trinity College Dublin environmental-geotechnics research and collaborations, with focus on greener economy by sustainable technologies, Workshop on Nature Inspired Solutions for the built Environment (NISE 1): integrated natural and engineered systems, Online, 11th February 2021, 2021, Emerging Geohazards Research Group, University of East London, London, UK, 16pp
Zhang L., O'Kelly B.C. and Nagel T., A finite-strain hyperviscoplastic model and undrained triaxial tests of peat, arXiv, 2017, p30
Osorio-Salas, J.P., Summary of PhD thesis entitled "Vacuum Consolidation Field Test on a Pseudo-Fibrous Peat", Trinity College Dublin, Ireland (Principal supervisor: B.C. O'Kelly), In PhD Theses: 2013. Géotechnique, 65, (8), 2015, ppw8-
O'Kelly B.C., Some current geotechnical research at Trinity College Dublin, Ireland India Concrete Research Initiative (IICRI) Group Workshop on Research Collaborations with Structural Engineering Staff at Trinity College Dublin, Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, Dublin, Ireland, 15th August 2014, 2014, Ireland India Concrete Research Initiative Group, 12pp
O'Kelly B.C., Some current geotechnical research at Trinity College Dublin, with a focus on instrumentation and monitoring, COST Action TU1202 - Working Group 2 workshop: slopes monitoring data knowledge exchange, Department of Civil and Environmental Engineering, Imperial College, London, 13th May 2014, 2014, 6pp
News Feature. In: Construction and Property News Magazine, "Vacuum consolidation improves peat ground conditions", Construction and Property News, 36, (7 (June)), 2010, p25 - 25
Osorio J.P., Farrell E.R., O'Kelly B.C. and McElvaney J., Design approach for improving rampart roads, Young European Arena of Research website, Extended abstract, 2008
O'Kelly B.C., Development and uses of the UCD hollow cylinder apparatus, Invited academic presentation, Urban Institute Ireland, University College Dublin, Ireland, 27th July, 2007
Geotechnical research Trinity College Dublin, The Irish Scientist Year Book 2005, 13, 2005, pp90 - [Farrell E.R, Orr T.L.L and O'Kelly B.C]
O'Kelly B.C. and Naughton P.J., Irish researchers develop automated anisotropic test kit, Ground Engineering, 36, (4), 2003, p7 (News feature)
O'Kelly, B.C., The Influence of Particle Shape Distribution on Magnesium Sulphate Soundness Values, Department of Civil Engineering, University College Dublin, Internal report, 1992
O'Kelly B.C., The Magnesium Sulphate Soundness Values of Selected Irish Aggregates, Report commissioned by F.Z. Norman, Cement Roadstone Holdings plc., Department of Civil Engineering, University College Dublin, September, 1991
Research Expertise
Description
Soil Mechanics; Geotechnical Engineering; Geoenvironmental Engineering; Environmental Geotechnics. My research expertise encompasses the following areas: 1. Bespoke ground improvement technologies, which can be categorized into three main themes, as follows: (a) Nanoparticles, bioploymers, MICP, polyelectrolytes, cement and lime; (b) Granular columns and anchors, geosynthetics and embedded pile walls; (c) Ground improvement for peat deposits. 2. Geotechnics of biosolids, sewage sludge and water-treatment residue materials. 3. Monopile foundations for offshore wind turbines. 4. Axial monotonic and cyclic loading of open and closed-ended piles and footings. 5. Geomechanical behaviour/properties of peat, including effective-stress strength properties and constitutive modelling. 6. Atterberg limits determination. 7. Generalised stress path testing of sand using a hollow cylinder apparatus. 8. Water content determinations for peat and other highly organic soils using the oven drying method. More detailed descriptions of these research are included in the Projects Section below.Projects
- Title
- BESPOKE GROUND IMPROVEMENT TECHNOLOGIES
- Summary
- My research can be categorized in three main themes, as follows: . NANOPARTICLES, BIOPLOYMERS, MICP, POLYELECTROLYTES, CEMENT AND LIME: 1) Experimental investigation of the strength/stiffness improvements achieved for clean and kerosene-contaminated clay using nanoclay and nanosilica as additives; 2) Guidelines presented for selecting potentially useful natural polymers (biopolymers) as environmentally friendly and sustainable grouting chemicals for strengthening sand; 3) Microbial-induced carbonate precipitation (MICP), including laboratory investigations of different injection strategies and using different concentrations of bacterial cell and urea-calcium chloride solutions for the strength/stiffness improvements in loose sand; 4) Using dilute polyelectrolyte solution in combination with aluminium sulphate as soil improvement measure for organic residues and ultra-soft organic clay; 5) Improvement of phyllite clays using cement and lime for various construction material applications. . GRANULAR COLUMNS AND ANCHORS, GEOSYNTHETICS AND EMBEDDED PILE WALLS; 1) Granular columns, including laboratory model studies on (a) settlement performance of single long floating granular columns and end-bearing column groups installed using displacement and replacement methods in soft clay beds and (b) settlement performance of pad footings bearing on reinforced loose and dense sand beds under the influence of fluctuating groundwater table; 2) Granular anchor performance insitu (lodgement till and made ground), including numerical modelling, development of a new method of analysis for the determination of ultimate pullout capacity and novel modification of the anchor's conventional flat baseplate presented for enhanced performance ; 3) Enhancement in short-term shear strength for embankments constructed from marginal fill achieved using dual-function geosynthetics (reinforcement and local in-plane drainage functions); 4) Embedded pin pile walls for slope stabilisation/rehabilitation; 5) Model studies performed to demonstrate the novel use of concentric rings of small diameter displacement piles around central monopile to limit its lateral displacement (rotation) under long-term cyclic lateral loading. . GROUND IMPROVEMENT FOR PEAT DEPOSITS: 1) The vacuum consolidation technique applied to peat, including heavily instrumented field trial on a 10m x 10m x 4m deep fibrous peat deposit; 2) For fibrous/hemic peats, laboratory trial demonstrating osmosis effect achieved by addition of salt grains to accelerate the rate of primary consolidation and reduce creep rate; 3) Stimulated decomposition in peat for engineering applications, including feasibility trial undertaken regarding the ability to artificially stimulate and pre-decompose a bearing peat stratum prior to the main construction works towards mitigating against unacceptable compression rates occurring over the design life.
- Title
- GEOTECHNICS OF BIOSOLIDS, SEWAGE SLUDGE AND WATER-TREATMENT RESIDUE MATERIALS
- Summary
- This project comprises experimental investigations and theoretical work on the geotechnical behaviour/properties of biosolids, sewage sludge and water-treatment residue materials, which are by-products of municipal wastewater treatment and water treatment processes. Topics covered include their physical, geotechnical index, compaction, undrained strength and effective-stress strength properties, compressibility, consolidation and permeability, and the effects of oxidation, biodegradation, the viscous gel-like pore fluid for biosolids/sewage sludge material, and chemicals added during the treatment processes. The project addresses various geotechnical issues pertinent to landfill (monofill) disposal of these materials, including undrained strength requirements, design strength, on-site and laboratory strength measurements and water content-strength correlations.
- Title
- MONOPILE FOUNDATIONS FOR OFFSHORE WIND TURBINES
- Summary
- This project involved a comprehensive experimental program of 1g repeated lateral load tests performed on scaled rigid monopiles installed in sand beds. Firstly, a new mechanical loading system was developed to apply many thousands of repeating cycles of lateral load in different forms to the 1g model, with full control provided over the loading direction (i.e. one-way or two-way lateral loading), amplitude, frequency and waveform shape (sinusoidal, square or haversine). Novel techniques to limit the lateral displacement (rotation) of the monopile under long-term cyclic lateral loading were investigated including: 1, use of concentric rings of small diameter displacement piles around the monopile; 2, installation of four shorter piles, arranged in a cruciform, which attach to the head of the central monopile by way of a grillage. Lateral soil resistance profiles were determined from measured pile bending strain data. Further, an experimental model that takes into account various basic characteristics of the applied lateral load cycles was developed for estimation of the pile's accumulated rotation.
- Title
- AXIAL MONOTONIC AND CYCLIC LOADING OF OPEN AND CLOSED-ENDED PILES AND FOOTINGS
- Summary
- This project involved axial loading of reduced scale piles and footings on sand beds insitu. For closed-ended piles in dense sand, static and cyclic axial compression and tension load testing was performed to study the causes of friction fatigue. For open-ended piles in loose and medium-dense sand, the effects of installation method, soil-core development and cyclic loading on shaft resistance mobilisation were investigated. A new design method for estimating the shaft capacity of piles in sand was proposed and compared with measurements made on prototype field-scale piles. Eccentric load testing was performed on model footings having different aspect ratios and embedment depth in dense sand to study the factors affecting the bearing resistance of shallow footings in sand.
- Title
- GEOMECHANICAL BEHAVIOUR/PROPERTIES OF PEAT, INCLUDING EFFECTIVE-STRESS STRENGTH PROPERTIES AND CONSTITUTIVE MODELLING
- Title
- ATTERBERG LIMITS DETERMINATION
- Summary
- This project concerns various methods for the determination of the Atterberg limits, including correlation with undrained strength, the development of a drop-cone method for the determination of the plastic strength limit (PL100), and the applicability of Atterberg limit concepts applied to peat and peaty soils.
- Title
- GENERALISED STRESS PATH TESTING OF SAND USING A HOLLOW CYLINDER APPARATUS
- Summary
- This project involved the development of a new hollow cylinder apparatus (HCA), including associated instrumentation, calibration and control systems, which facilitate accurate stress path measurements from the pseudo elastic domain to failure strain levels. The HCA is particularly suited to studying the mechanical behaviour of cross-anisotropic test specimens since both the magnitudes of the three principal stresses and the orientation of the major-minor principal stress axes can be independently controlled. In this project, the plastic yield behaviour of full saturated water-pluviated sand specimens was studied under generalized stress conditions. Using the experimental yield data gathered, some existing yield criteria were investigated to establish whether they provide satisfactory predictions of the onset of plastic yielding in sand deposits under generalized stress conditions for routine geotechnical engineering design.
- Title
- WATER CONTENT DETERMINATIONS FOR PEAT AND OTHER HIGHLY ORGANIC SOILS USING THE OVEN DRYING METHOD
- Summary
- There has been much debate in the literature over the past 60 years regarding an appropriate oven-drying temperature for water content determinations in peat and other organic soils. For these soils, several researchers have recommended drying temperatures in the range 60-90 degree Celsius in an attempt to prevent possible charring, oxidation and/or vaporization of substances other than pore water. This experimental project establishes the oven drying temperature range acceptable for routine water content determinations on peat and other organic soils, including a new method developed to relate water content values determined for the same material but on the basis of different oven-drying temperatures.
- Title
- GEOTECHNICAL ENGINEERING (SLOPE STABILIZATION AND EMBANKMENT DESIGN AND CONSTRUCTION)
- Summary
- These field projects involved forensic investigations and geotechnical remedial works necessary to enhance the factor of safety on slope instability for road and rail infrastructure on embankments constructed over natural sidelong ground, in particular using embedded pile retaining wall solution. Monitoring the performance of embankments constructed on soft soil deposits.
- Title
- Design Approach for Improving Bog Rampart Roads
- Summary
- Investigators: Dr. Eric R. Farrell (Principal Investigator), Dr. B.C. O'Kelly (PhD supervisor) and Dr. Jim McElvaney; and Mr. Juan Pablo Osorio Salas (PhD research student_Colombia). Funding:- Research Programme Fellowships (2007) from the National Roads Authority, Ireland; Postgraduate Ussher Fellowship from Trinity College Dublin and Geotechnical Research Award from the Institution of Engineers of Ireland. The total funding for the project from the National Roads Authority is 136,000. PROJECT DESCRIPTION: A vacuum consolidation field test was successfully implemented for a 10 x 10 m area of raised bog, in order to investigate the performance of the method in pseudo-fibrous peat deposits and also to evaluate the viability of this technique for the construction and improvement of roads over peat. The efficiency of two different spacing of prefabricated drain was investigated for the 4-m deep peat deposit. The test was instrumented and monitored for a period of 11 months. Two different vacuum generating systems were also tested during the project. The field data were back-analysed using a range of finite element models incorporated in PLAXIS. Acceptable results were obtained for the ground vertical displacements. The design parameters were determined by means of oedometer tests, indicating that the geotechnical properties of the peat obtained in conventional tests can be used in the design of vacuum consolidation projects. Project profile: http://www.nra.ie/nra-research/research-profiles/Design-Approach-for-Improving-Rampart-Roads.pdf http://www.engineersireland.ie/EngineersIreland/media/SiteMedia/groups/societies/geotechnical/Vacuum-Consolidation-in-Peat.pdf?ext=.pdf
- Funding Agency
- National Roads Authority (Ireland)
- Date From
- October 2007
- Date To
- September 2011
- Title
- Experimental Investigation of Helical Screw Piles for Offshore Foundations
- Summary
- The performance of helical screw piles in noncyclic onshore applications indicates that they have the required characteristics to make them suitable in cyclic offshore applications. This research project, jointly between the Geotechncial Research Groups at the Institute of Technology, Sligo, and Trinity College Dublin, will involve experimental testing using the IT Sligo Geotechnical Centrifuge to investigate the load capacity and cyclic performance of helical screw piles for offshore foundation applications. Dr Pat Naughton (Principal investigator, IT Sligo), Dr B.C. O'Kelly (co-supervisor) and Mr. Darren Reape (Research student based in IT Sligo)
- Funding Agency
- Institutes of Technology Ireland (IOTI)
- Date From
- Sept 2015
- Date To
- Aug 2017
- Title
- Model Studies on Caisson Supported Monopiles under Long-term Monotonic and Cyclic Lateral Loads
- Summary
- Dr. B.C. O'Kelly (Principal Investigator), and Mr. Ali Kordzadeh Kermani (Research student_Iran).
- Date From
- September 2015
- Date To
- September 2018
- Title
- Determination of Soil Plasticity Using a New Apparatus
- Summary
- Dr. B.C. O'Kelly (Principal Investigator), and Mr. Seyedmasoud Manafighorabaei (Research student_Iran). Determination of soil plasticity is of great importance in geotechnical engineering projects. Consistency of soil can be expressed in terms of Atterberg limits of soils. Liquid limit and plastic limit tests are among the two most regular tests for determination of index properties of fine grain soils. Soil classification of fine grain soils is based on results of Atterberg limit tests. In addition, many engineering properties of soils can be correlated to the results of soil plasticity determination tests. Current standard methods for determination of soil plasticity have several issues that make their results unreliable in many cases. In this research, it is tried to address problems of conventional methods regarding soil plasticity determination, design a new apparatus for determination of liquid limit and plastic limit of soils, and standardise a new test method for determination of soil plasticity with more accuracy and reliability in comparison to conventional methods. Soil consistency is a qualitative phenomenon. In this regard, author?s suggestion for solving the problems related to the determination of soil plasticity is utilisation of qualitative research approach. Accordingly, the author has proposed a new test method and designed a new apparatus (Manafi Apparatus) for determination of soil consistency based on the nature of soil deformation utilising qualitative research approach, referred to as Manafi Method. In this technique, it is possible to determine the workability of soil at Atterberg limits and specify the consistency state of the soil. Ten different soils were selected carefully to cover a wide range of soils plasticity with plastic limits range from 18.6% to 30.8%, and the liquid limits range from 30.3% to 61.8%. The most differences between the results obtained by proposed method and standard methods were 2.4% and 1.9% of water content for liquid and plastic limits correspondingly. The experimental results obtained by designed apparatus confirmed the proposed method and provided more consistent results in soil plasticity determination in comparison to current standard methods (fall cone and thread rolling methods).
- Funding Agency
- Postgraduate Research Studentship from Trinity College (2015-2018)
- Date From
- March 2015
- Date To
- February 2017
- Title
- Characterisation of Macro- and Micro-mechanics of Bio-cemented Sands using Discrete Element Method
- Summary
- Dr. B.C. O'Kelly (Principal Investigator), and Mr. Mohammad Aminpour (Research assistant_Iran).
- Funding Agency
- Postgraduate Research Studentship from Trinity College (2014-2016)
- Date From
- March 2014
- Date To
- Sept 2015
- Title
- Undrained Triaxial Experimental Investigations and Hyperviscoplastic Modelling of Peat Materials
- Summary
- Dr. B.C. O'Kelly (Principal Investigator), Dr. T. Nagel (cosupervisor) and Ms. Lin Zhang (Research student_China). This PhD research includes two parts, viz. experimental investigation on the undrained mechanical properties of undisturbed fibrous peat and a finite strain constitutive model within a thermodynamically consistent framework based on the experimental results of the tested peat. From the laboratory investigation, nonlinear behaviour with large strain was observed from the loading-unloading tests on peat. The influence of cell pressure, strain rate, stress relaxation on the constitutive behaviour as well as strain recoveries from unloading were investigated. Relaxation tests were carried out for overstress quantification as well as to obtain the equilibrium state. The tested peat was categorised as a rate-dependent material with equilibrium hysteresis. Structural anisotropy was also investigated by testing the undisturbed vertical and horizontal specimens under the same conditions. Although in the proposed model, the structural anisotropy was not included, the experimental data provided the foundation for the future development of anisotropic constitutive models. The observed material behaviour motivated a rheological model comprising four parallel layers, each consisting of elastic, viscoelastic and elastoplastic elements. The proposed hyperviscoplastic model was derived from the entropy inequality. Each part of the model was verified against their analytical solutions. The model parameter fitting started with the rate-independent equilibrium tests, where the hyperelastoplastic model was fitted to the defined laboratory equilibrium test. Two compression-relaxation tests, carried out at different strain rates, were used for the parameter estimation of the rate-dependent hyperviscoplastic model. The hyperviscoplastic model was validated against five strain rate tests under various load cases as well as an undrained triaxial creep test. The finite strain constitutive model derived within a thermodynamically consistent framework showed its versatility in simulating peat behaviour in various load cases by a good agreement of the experimental results. Also, from the process of the deriving the hyperviscoplastic model, it is perceived that it would be easy to extend the current model with more features in a mathematically and thermomechanically consistent manner.
- Funding Agency
- Irish Research Council (2011-Mar 2015) and TCD Postgraduate Research Studentship (Mar 15 to Mar 16)
- Date From
- December 2011
- Date To
- March 2016
- Title
- Model Studies on Monopile under Long-Term Cyclic Lateral Loading
- Summary
- Dr. B.C. O'Kelly (Principal Investigator), and Mr. Muhammad Arshad(Research student_Pakistan).
- Funding Agency
- Postgraduate Research Studentship from Trinity College (2011-2014)
- Date From
- September 2011
- Date To
- September 2014
- Title
- Application of Biopolymers in Soil Improvement by Grouting
- Summary
- Dr. B.C. O'Kelly (Principal Investigator), and Mr. Hamid Reza Khatami (Research student_Iran).
- Funding Agency
- Irish Research Council
- Date From
- September 2010
- Date To
- September 2013
- Title
- Effect of Biodegradation on the Compressibility of Peat Deposits
- Summary
- Dr. B.C. O'Kelly (Principal Investigator), and Mr. Som Pong Pichan (Research student_Malaysia).
- Funding Agency
- Public Service Department, Government of Malaysia
- Date From
- September 2010
- Date To
- September 2012
- Title
- The Applicability of the Principle of Effective Stress in Peat Materials
- Summary
- Dr. B.C. O'Kelly (Principal Investigator), and Ms. Lin Zhang (Research student_China).
- Funding Agency
- Postgraduate Scholarship from Trinity College (2010-2011)
- Date From
- September 2010
- Date To
- November 2011
- Title
- Laboratory Study of the Vacuum Consolidation Technique in Peat
- Summary
- Dr. B.C. O'Kelly (Principal Investigator), and Mr Harry Griffin
- Funding Agency
- Trinity College Postgraduate Scholarship Award
- Date From
- September 2012
- Date To
- September 2013
- Title
- Stability of Peat Dams Constructed on Bogland
- Summary
- Dr. B.C. O'Kelly (Principal Investigator), and Mr. Kevin Flynn (Research student_Ireland).
- Funding Agency
- Postgraduate Research Studentship from Trinity College Dublin.
- Date From
- September 2009
- Date To
- September 2010
- Title
- Strain Rate and Accuracy of the Constant-Rate-of-Strain Oedometer Test
- Summary
- Dr. B.C. O'Kelly (Principal Investigator), and Mr. Hugh Fitzpatrick (Research student_Ireland). Funding: - Postgraduate Research Studentship from Department Civil, Structural and Environmental Engineering, Trinity College Dublin, and Geotechnical Research Award from the Institution of Engineers of Ireland.
- Date From
- September 2008
- Date To
- September 2010
- Title
- A Study of the Geotechnical Properties of Municipal Water Treatment Residues Generated in Ireland
- Summary
- Dr. B.C. O'Kelly (Principal Investigator), and Mr. Michael Quille (Research student). Funding:- Postgraduate Research Studentship from Trinity College Dublin and Geotechnical Research Award from the Institution of Engineers of Ireland.
- Date From
- October 2007
- Date To
- September 2009
- Title
- Stability of Peat Embankments
- Summary
- Dr. B.C. O'Kelly (Principal Investigator), and Ms. Grainne McInerney (Research student). Funding:- Postgraduate Scholarship Award from RPS-MCOS Consulting Engineers; Postgraduate Research Studentship from Trinity College Dublin and Geotechnical Research Award from the Institution of Engineers of Ireland.
- Date From
- October 2004
- Date To
- September 2006
Recognition
Representations
Council Member of The International Society of Environmental Geotechnology (ISEG) - a registered non-profit professional society of researchers, policymakers, educators, corporate personnel and representatives of organizations who are active or interested in the advancement and application of knowledge in the geoenvironmental sciences and engineering to sustainable development of all regions of the world (http://www.iseg.info/).
Contributor to Indian National Academy of Engineering Expert Groups for Preparation of Technology Roadmaps with Actionable Recommendations on the topic of "Industrial By-Products (IBPs) for Sustainable Infrastructure Development". PI: Prof. DN Singh, IIT Bombay, India.
Editorial Board Member, Geotechnics: an interdisciplinary, international peer-reviewed open access journal of geotechnical engineering, published quarterly online by MDPI (https://www.mdpi.com/journal/geotechnics)
Editorial Board Member of the Institution of Civil Engineer's international journal Environmental Geotechnics (ICE Publishing) http://www.icevirtuallibrary.com/content/serial/envgeo
Technical Committee member - 7th International Symposium on Deformation Characteristics of Geomaterials (IS-Glasgow2019): Laboratory Stress Strain Strength Testing of Geomaterials conference, being held in Glasgow, Scotland, 26th-28th June 2019.
Co-chaired (B.C. O'Kelly, R. Azzam and Y. Du) the session on Environmental Geotechnics for the China-Europe Conference on Geotechnical Engineering,13-16th August 2018, Vienna, Austria.
National Management Committee Member for COST Action TU1202: Impact of climate change on engineered slopes for infrastructure (http://www.cost.eu/domains_actions/tud/Actions/TU1202)
Member Scientific Committee for Civil Engineering Research in Ireland Conference (Bridges, Concrete, Geotechnics, Materials, and Structures), 28th-29th August 2014, Belfast
Member Scientific Committee for Joint Symposium on Bridge and Infrastructure Research in Ireland and Concrete Research in Ireland (2nd-3rd September 2010), Cork
Member Scientific Committee for Joint Symposium on Bridge and Infrastructure Research in Ireland and Concrete Research in Ireland (4th-5th December 2008), Galway
Co-chair (B.C. O'Kelly and A. Kahru) for Environmental Restoration (session II) at the First International Conference on Environmental Management, Engineering, Planning and Economics (CEMEPE), Skiathos, Greece, 28th June, 2007
Irish representative, EUCEET III, EU Academic Network Project on European Civil Engineering Education and Training (www.euceet.eu)
PR Officer, Geotechnical Society, Sector of Engineers Ireland
Irish representative, EUCEET II, EU Academic Network Project on European Civil Engineering Education and Training (www.euceet.eu)
Irish representative, European Geotechnical Network for Research and Development (GeoTechNet)
Member of Conference Organizing Committee for the Fourth Decennial Symposium on Concrete Practice in Ireland held at University College Dublin (10th-11th May 1995)
Awards and Honours
Fellow of Trinity College Dublin, FTCD (awarded on the grounds of distincition in research and scholarship)
Fellow of The Institution of Engineers of Ireland, FIEI
Fellow Geological Society, London, FGS
Pierse-Newman Fellowship in Civil Engineering, University College Dublin (first recipient)
Award recipient for best paper in geotechnical engineering at 2010 Conference on Bridge and Concrete Research in Ireland (BCRI) [Osorio J.P., Farrell E.R. and O'Kelly B.C., Peat improvement under vacuum preloading: A novel approach for bog roads in Ireland. Vol. 1, pp. 255 - 262]
Research Fellowship in Soil Mechanics, University College Dublin
Cement Roadstone Holdings Research Scholarship, Cement Roadstone Holdings plc.
Geotechnical Research Award, Institution of Engineers of Ireland
Clara-Abbott Scholarship Award, Clara-Abbott Foundation, Illinois
Environmental Research Award, Lord Edward Fitzgerald Memorial Fund, University College Dublin
Research Demonstratorship in Civil Engineering, University College Dublin
Scholar at University College Dublin (awarded on basis of fourth-year Annual Examinations in Civil Engineering)
Scholar at University College Dublin (awarded on basis of third-year Annual Examinations in Civil Engineering)
Memberships
Chartered Engineer (CEng MICE), Institution of Civil Engineers, London
Chartered Environmentalist (CEnv), Society for the Environment, UK
Chartered Engineer, Engineering Council UK
Chartered Engineer and Fellow (CEng FIEI) of The Institution of Engineers of Ireland
European Engineer (EurIng), European Federation of National Engineering Associations
International Register of Professional Engineers (IntPE)
Professional Geologist (PGeo), Institute of Geologists of Ireland
Member, Geotechnical Society of Ireland (MGSI), Engineers Ireland, including committee member 2004-2006
Fellow Geological Society of London (FGS)
Member, International Society of Soil Mechanics and Geotechnical Engineering (and non-voting member on Council in 2005)