抄録
“Pseudo-overconsolidation effect” of saturated clay is investigated using SYS Cam-clay model. The model describes the decay of soil structure, loss of overconsolidation and evolution of anisotropy with ongoing plastic deformation of soil. The model suggests that if soil structure in clay is formed during the sedimentary environment due to chemical effect such as cementation, the soil is possible to acquire overconsoildation without stress history. The higher the degree of the soil structure, the higher the clay displays sensitivity and compressibility. In addition, the soil can display rewinding behavior in undrained shear test and exhibit delayed consolidation in one-dimensional consolidation test.
