Fig. 17
From: Characteristics of wetting behavior under unloading in natural granite residual soil

Wetting deformations of soil calculated by two different models. Note: the wetting deformation was positive in compression and negative in tension. The wetting deformation here refers to the wetting deformation at a certain deviatoric stress q = σ1 − σ3. When σ3 is unloading, q = q0 + 20 kPa; when σ1 is unloading, q = − 20 kPa.