DYNAMIC PROPERTIES OF SOFT CLAY FOR WIDE STRAIN RANGE.

Abstract

A systematic experimental study described was conducted for dynamic properties of natural soft clay employing an improved cyclic triaxial apparatus. Undisturbed samples with various void ratios and plasticity indices picked up from an alluvial clayey layer were tested. Based on the experimental results on clays with different consolidation histories, the current practice of combining the in situ small strain modulus with the laboratory modulus ratio vs. strain curve to estimate the in situ large strain modulus to be used in dynamic response analyses of grounds is discussed.