ABSTRACT
The macroscopic mechanical behaviour of unsaturated porous media under isothermal conditions is studied within the framework of upscaling techniques. First the main features of the homogenization method are recalled. Then, the macroscopic state equation including the capillary effects is derived. Finally, a morphological model is used in order to clarify the link between the sorbtion-desorbtion hysteretic phenomena and the macroscopic mechanical behaviour.
