Comptes Rendus
Nonlinear behavior of matrix-inclusion composites under high confining pressure: application to concrete and mortar
Comptes Rendus. Mécanique, Volume 336 (2008) no. 8, pp. 670-676.

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.

On présente une approche micromécanique de la réponse d'un béton à des compressions œdométrique ou hydrostatique. Le béton est décrit comme un composite avec une matrice cimentaire et des inclusions rigides. L'accent est mis sur le rôle de l'interface entre matrice et inclusion qui représente la zone interfaciale de transition (ITZ). On se donne un comportement élastoplastique pour la matrice ainsi que pour les interfaces. Le comportement homogénéisé est obtenu à l'aide de la méthode sécante modifiée adaptée à la présence d'interfaces.

Received:
Accepted:
Published online:
DOI: 10.1016/j.crme.2008.05.009
Keywords: Continuum mechanics, Concrete, Mortar, Interfaces, Homogenization, Nonlinearity
Mot clés : Milieux continus, Béton, Mortier, Interface, Homogénéisation, Nonlinéarité

Tuan Hung Le 1; Luc Dormieux 2; Laurent Jeannin 1; Nicolas Burlion 3; Jean-François Barthélémy 1

1 IFP, 1–4, avenue de Bois-Préau, 92582 Rueil-Malmaison, France
2 ENPC, 6 et 8, avenue Blaise-Pascal, Champs-sur-Marne, 77455 Marne-la-Vallee cedex 2, France
3 Polytech'Lille, cité scientifique, 59650 Villeneuve d'Ascq, France
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Tuan Hung Le; Luc Dormieux; Laurent Jeannin; Nicolas Burlion; Jean-François Barthélémy. Nonlinear behavior of matrix-inclusion composites under high confining pressure: application to concrete and mortar. Comptes Rendus. Mécanique, Volume 336 (2008) no. 8, pp. 670-676. doi : 10.1016/j.crme.2008.05.009. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2008.05.009/

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