Theoretical and Experimental Studies of Microstructural Processes Related toInelastic Stress-Strain Behavior of Cohesive Soils

摘要

The primary objective of the study was to develop an understanding of the stressstrain relationship and other related geotechnical properties of cohesive materials such as clays from a microstructural point of view. In the theoretical area, several theories were developed for quantifying the physico-chemical forces between two clay particles, immersed either in water or in a chemical contaminant. With the aid of these theories, a numerical modeling technique, based on the discrete element method, was developed to study the micromechanical behavior of clays. Experiments were conducted to examine the effects of chemicals on the behavior of cohesive soils. On the basis of the numerical and experimental results, the stress strain behavior of clays is studied from a microstructural view point.