ABSTRACT
Cam-clay model (Schofield and Wroth 1968) is certainly very simple, i.e., the number of material parameters is few, and the meaning of each parameter is clear. However, Cam-clay model has problems to describe the following features: (1) Influence of intermediate principal stress on deformation and strength of soils, (2) Influence of density and/or confining pressure on the deformation and strength of soils, (3) Behavior of structured soils and aged soils.
