Nonlinear behavior of matrix-inclusion composites under high confining pressure: application to concrete and mortar

Hung Le Tuan , Luc Dormieux (1) , Laurent Jeannin , Nicolas Burlion (2) , Jean-François Barthelemy (1)

1 navier umr 8205 - Laboratoire Navier
2 LML - Laboratoire de Mécanique de Lille - FRE 3723

This paper is devoted to a micromechanics-based simulation of the response of concrete to hydrostatic and oedometric compressions. Concrete is described as a composite made up of a cement matrix in which rigid inclusions are embedded. The focus is put on the role of the interface between matrix and inclusion which represent the interfacial transition zone (ITZ). A plastic behavior is considered for both the matrix and the interfaces. The effective response of the composite is derived from the modified secant method adapted to the situation of imperfect interfaces

Mots clés: Continuum mechanics; Concrete; Mortar; Interfaces; Homogenization; Nonlinearity

Hung Le Tuan, Luc Dormieux, Laurent Jeannin, Nicolas Burlion, Jean-François Barthelemy. Nonlinear behavior of matrix-inclusion composites under high confining pressure: application to concrete and mortar. Comptes Rendus Mécanique, 2008, 336 (8), pp.670-676. ⟨10.1016/j.crme.2008.05.009⟩. ⟨hal-00313295⟩