Analysis of the durability of glued wood-concrete assembly subjected to water loading by full-field strain measurements.

Louisa Loulou (1) , Sabine Caré (1) , Robert Le Roy (1) , Michel Bornert (2, 3)

1 navier umr 8205 - Laboratoire Navier
2 LMS - Laboratoire de mécanique des solides
3 multi-échelle - Modélisation et expérimentation multi-échelle pour les solides hétérogènes

This paper discusses the factors influencing the durability of glued assemblies of wood and cementitious material under variable hygrometric conditions. The composite specimens are composed of cementitious material connected to wood using epoxy glue. Global strains compared to free strains have been measured and local strains have been characterized by means of the digital image correlation technique. We showed in particular that the deformations in wood are related to the microstructure of the wood and that the restrained deformations at the glue interface may induce damage in cementitious material. The mechanisms of damage are correlated to the anisotropy directions of the wood.

Mots clés: Glued wood concrete assembly; Durability; water loading; restrained deformation; DIC

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Louisa Loulou, Sabine Caré, Robert Le Roy, Michel Bornert. Analysis of the durability of glued wood-concrete assembly subjected to water loading by full-field strain measurements.. Photomechanics 2011, International conference of full-field measurement techniques and their applications in experimental solid mechanics, Feb 2011, Brussels, Belgium. 2p. ⟨hal-00569012⟩