On damaged interfaces in masonry buildings: a multi-scale approach

Abstract : The aim of the present work is to propose a new micro-mechanical deductive approach to predict effective mechanical properties of micro-cracked brick/mortar interface in masonry structures. This model, based on a previous study proposed by Rekik and Lebon (2010), represents an innovative and analytically consistent way to describe meso-scale damaging phenomenon localized at the interface between deformable solids. The focal point is to assume the existence of a new material layer between brick and mortar, called interphase. This multi-scale method combines standard homogenization technique (law of mixtures, classical bounds, numerical, random), continuum damage mechanics (CDM) and asymptotic technique in order to obtain the brick/mortar interface constitutive law. In this work it will be shown that only soft behavior interface is considered. It has been found that the variable orientation of micro-cracks induces an evolution of the material simmetry. Moreover, the angle influence on interface's stiffness appears only at higher order terms of the asymptotic expansion.
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Contributor : Frédéric Lebon <>
Submitted on : Wednesday, July 9, 2014 - 9:13:36 AM
Last modification on : Monday, March 4, 2019 - 2:04:23 PM
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  • HAL Id : hal-01007453, version 1


Maria Letizia Raffa, Frédéric Lebon. On damaged interfaces in masonry buildings: a multi-scale approach. 2nd International Conference on Protection of Historical Constructions, May 2014, Antalya, Turkey. 6 p. ⟨hal-01007453⟩



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