%0 Journal Article %A Anuchit Uchaipichat %D 2010 %J International Journal of Geological and Environmental Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 48, 2010 %T Influence of Hydraulic Hysteresis on Effective Stress in Unsaturated Clay %U https://publications.waset.org/pdf/5397 %V 48 %X A comprehensive program of laboratory testing on a compacted kaolin in a modified triaxial cell was perform to investigate the influence of hydraulic hysteresis on effective stress in unsaturated soils. The test data are presented on a range of constant suction shear tests along wetting and drying paths. The values of effective stress parameter χ at different matric suction were determined using the test results. The effect of hydraulic hysteresis phenomenon on the effective stress was observed. The values of effective stress parameter χ obtained from the experiments were compared with those obtained from the expressions proposed in literature. %P 639 - 643