Poroplastic damage modeling of unsaturated cement-based materials

Thomas Rougelot (1) , Jian-Fu Shao (1) , Liang Chen (1) , Da Chen (1)

1 LML - Laboratoire de Mécanique de Lille - FRE 3723

An elastoplastic damage model is proposed for cement-based material is unsaturated condition. A generalized effective stress concept is used for poroplastic coupling. Damage by microcracks is coupled with plastic deformation. The proposed model is applied to a mortar in triaxial compression tests with different degrees of saturation. The mechanical response of a concrete beam in different saturation conditions is also analyzed using the proposed model. The model's predictions are in close agreement with experimental data.

Mots clés: Poroplasticity; Damage; Porous media; Mortar; Concrete; Desiccation

Thomas Rougelot, Jian-Fu Shao, Liang Chen, Da Chen. Poroplastic damage modeling of unsaturated cement-based materials. Mechanics Research Communications, 2009, 36 (8), pp.906-915. ⟨10.1016/j.mechrescom.2009.07.003⟩. ⟨hal-00429766⟩