DefinePK

Abstract

An experimental program of laboratory testing on a compacted kaolin in a modified triaxial cell was perform to investigate the effect of hydraulic hysteresis on a loading collapse curve of unsaturated soils. The test data are presented on a range of constant suction isotropic loading tests along wetting and drying paths. The effect of hydraulic hysteresis on the compression curves at different values of matric suction and the loading collapse curves was observed. The loading collapse curve also indicates a constant value of effective preconsolidation pressure with decreasing matric suction along the wetting scanning curve.