Article Dans Une Revue Materials and structures Année : 2016

Influence of polymer proportion on transfer properties of repair mortars having equivalent water porosity

Résumé

This study analyzes the influence of polymers proportion on the durability indicators of mortars patch repair modified with poly-ethyl acrylate styrene acrylamide (PEASA) and having similar water porosity (in the range 16, 5–18 %). To assess mortars durability, this work was based on the comparison of durability indicators (porosity, permeability, capillary absorption, effective chloride diffusion coefficient) of four repair industrial materials and one reference mortar. Results indicate that water porosity on its own is not sufficient to understand the transfer properties behavior of these materials. There is evidence that material performance depends on polymers proportion which have an important role in microstructure and pore size distribution. The use of PEASA aqueous dispersions, enabled polymer film formation to yield a monolithic matrix phase with a network structure in which the hydrated cement phase and polymer phase interpenetrate into each other. This eventually helps to improve flexural strength and durability properties of mortar repair.

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hal-04158065 , version 1 (11-01-2024)

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Abderrahmane Soufi, Pierre-Yves Mahieux, Abdelkarim Aït-Mokhtar, Ouali Amiri. Influence of polymer proportion on transfer properties of repair mortars having equivalent water porosity. Materials and structures, 2016, 49 (1-2), pp.383-398. ⟨10.1617/s11527-014-0504-3⟩. ⟨hal-04158065⟩
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