Assessment of the unsaturated water transport properties of an old concrete: Determination of the pore-interaction factor - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Journal Articles Cement and Concrete Research Year : 2011

Assessment of the unsaturated water transport properties of an old concrete: Determination of the pore-interaction factor

Abstract

In this study all the data needed to describe water transport (drying) within an existing concrete structure were characterized using a simple drying experiment. The properties (desorption isotherm, porosity and the unsaturated water transport properties namely, diffusivity and permeability) were evaluated by postprocessing the weight loss data. Once obtained, the permeability evolution was used to check the validity of the Mualem-van Genuchten equations. It appeared that the default pore-interaction factor value proposed by Mualem (p = + 0.5) is just a rough estimate: the values obtained in this study were all negative. Comparing these values to the literature, the pore-interaction factor seems to be correlated to the van Genuchten's exponent m.
Fichier principal
Vignette du fichier
CCR 41(10) 1015-1023.pdf (1.02 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

cea-03293541 , version 1 (21-07-2021)

Identifiers

Cite

Stéphane Poyet, Sébastien Charles, Nicolas Honoré, Valérie L'Hostis. Assessment of the unsaturated water transport properties of an old concrete: Determination of the pore-interaction factor. Cement and Concrete Research, 2011, 41, pp.1015 - 1023. ⟨10.1016/j.cemconres.2011.06.002⟩. ⟨cea-03293541⟩

Collections

CEA DEN DEN-SACLAY
19 View
51 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More