Geotechnical Analysis of Peat
Title
Study of the stress-strain strength behaviour of peat
Project coordinator(s)
Dr. Brendan O’Kelly
Email: bokelly@tcd.ie
Tel: +353 1 896 2387
Description
A hollow cylinder torsional apparatus will be used to study the constitutive behaviour and strength of peat under carefully controlled stress conditions.
Title
Effective Stress in Peat Soils
Project Coordinator(s)
Dr. Brendan O’Kelly
Email: bokelly@tcd.ie
Tel: +353 1 896 2387
Research Student(s)
Lin Zhang
Email: linzhang@tcd.ie
Tel: +353 1 896 2535
Description
Peat deposit is considered to be geotechnically problematic material partly due to the limited experience in dealing with, as well as to the exotic peat mechanical behaviours. The effective stress theories developed for mineral soils were routinely applied to peat. However the high water content, high compressibility, low shear strength, compressible soil particles, porous and fibrous features etc. make it questionable to predict the mechanical behaviour of peat materials with direct application of the effective stress theories. In this research, the concept of effective stress is furthered and a new theoretical model is developed to predict the mechanical behaviour of peat soils, i.e. settlement and shear strength, considering about the compressible organic peat soil particles as well as the fibrous nature of peat.