Dilatancy Characteristics and Constitutive Modelling of the Unsaturated Soil Based on Changes in the Mass Water Content

Most soil mechanics theories are limited to strain hardening and shrinkage under high compressive stresses, there some shortcomings in the selection of suction or degree saturation as water content state varies constitutive models unsaturated soil. Based on triaxial shear tests compacted (a silt plasticity) with different confining pressure (low-confining), a dilatancy model based mass is proposed this paper. The influence deformation characteristics analysed. stress–dilatancy relationship prediction equation minimum rate provided. Selecting variable, suitable for established. method determining parameters applicability verified by comparisons between predicted experimental results.