Coupling between progressive damage and permeability of concrete: discrete modelling and experimental analyses

Gilles Pijaudier-Cabot (1) , George Chatzigeorgiou (2) , Abdelhafid Khelidj (3) , Vincent Picandet (4)

1 TEFC - Thermodynamique et Energétique des fluides complexes
2 Aristotle University of Thessaloniki
3 GeM - Institut de Recherche en Génie Civil et Mécanique
4 UBS - Université de Bretagne Sud

A significant increase of the permeability of concrete upon micro-cracking and a good correlation between the evolutions of damage (material stiffness) and permeability are observed experimentally. The present contribution investigates first this correlation theoretically, with the help of lattice analyses. Hydro-mechanical problems are considered with the construction of a hydraulic lattice, dual to the mechanical one. We observe that the average permeability upon micro-cracking is indexed on the evolution of the lattice compliance in the mechanical problem. Experimental results are reported in order to further quantify this growth of permeability due to damage.

Domaines: Génie civil

Gilles Pijaudier-Cabot, George Chatzigeorgiou, Abdelhafid Khelidj, Vincent Picandet. Coupling between progressive damage and permeability of concrete: discrete modelling and experimental analyses. Second International Symposium on Continuous and Discontinuous Modelling of Cohesive-Frictional Materials (CDM 2004), Sep 2004, Stuttgart, Germany. pp.119-130, ⟨10.1201/9780203023631-10⟩. ⟨hal-04660581⟩