STRAIN RATE AND THERMAL EFFECT ON STRESS-STRAIN BEHAVIOR OF ORGANIC CLAY

Abstract

Organic deposits are commonly encountered in estuaries regions. Organic matter directly
affects the engineering properties of soil. However, all most economic cities in the world are located in this
areas consisting of organic soil. Therefore, a technique to improve the properties of organic soil is important.
This work is focused on improving engineering properties of organic soil by heating. In order to investigate
the behavior, Pakpanang marine deposit clay is selected for this work. The scope of this research is to study
the behavior of soil by using temperature control consolidated undrained triaxial compression test. The
strain-rate dependency of undrained shear strength, pore water pressure, and stress path are investigated. The
influence of normally consolidated (NC) on stress-strain behaviors of soil is examined. The results of tests
indicated that the temperature relatively inverse to organic matter of soil and weaken the strength of soil.