Abstract
This chapter presents the modeling of the phenomenon of collapse upon
wetting using the effective stress approach established in Chapter 2 and the
elastoplastic framework for the volumetric behavior of soils proposed in the previous
chapter. Using the probabilistic porous-solid model, Bishop’s parameter can be
obtained to determine the current effective stress. The proposed framework includes
the hysteresis of the SWRC and, to some extent, the hydro-mechanical coupling of
unsaturated soils. This model is able to reproduce some particularities of the
phenomenon of collapse upon wetting that other models cannot simulate.