Effect of Different Peat Size and Pre-Consolidation Pressure of Reconstituted Peat on Effective Undrained Shear Strength Properties

International Research and Innovation Summit 2017

Azhar, A.T.S.^1 ; Norhaliza, W.^1 ; Ismail, B.^1 ; Ezree, A.M.^1 ; Nizam, Z.M.^1

Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Batu Pahat Johor

86400, Malaysia^1

关键词: Angle of friction;    Deviator stress;    Engineering design;    Excess pore pressure;    Post construction;    Preconsolidation pressure;    Strength property;    Undrained shear strength;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/226/1/012076/pdf
DOI  :  10.1088/1757-899X/226/1/012076

来源: IOP

【 摘 要 】

Shear strength of the soil is one of the most important parameters in engineering design, especially during the pre- or post-construction periods, since it is mainly used to measure and evaluate the foundation or slope stability of soil. Peat normally known as a soil that has a very low value of shear strength, and in order to determine and understand the shear strength of the peat, it is a difficult task in geotechnical engineering due to several factors such as types of fabrics, the origin of the soil, water content, organic matter and the degree of humification. The aim of this study is to determine the effective undrained shear strength properties of reconstituted peat of different sizes. All the reconstituted peat samples were formed with the size that passed the opening sieve of 0.425 mm (dmaxand excess pore pressure, Δu, show both of cincreased. However, at the final stage of the test, the graph is slightly declined due to the increment in stiffness of the specimen. The physical properties of the reconstituted peat