Abstract
This paper presents measured moisture diffusivities for sedimentary calcareous sandstone, lime silica bricks, bricks, and autoclaved, aerated concrete. The moisture diffusivities were calculated from the relation between the water sorption coefficients and the initial water content in the specimen before testing. The method used is based on Boltzmann transformation. The relation between the water sorption coefficients and the initial water content is measured by letting specimens, preconditioned to different initial water contents, suck de-ionized water while the water uptake is measured.
Résumé
Ce document présente les diffusivités d'humidité mesurées pour des grès calcaires sédimentaires, des briques silico-calciques, des briques et du béton cellulaire autoclavé. Les diffusivités d'humidité ont été calculées sur la base du rapport entre les coefficients de sorption d'eau et la teneur en eau initiale de l'échantillon avant les essais. La méthode utilisée repose sur la transformation de Boltzmann. Le rapport entre les coefficients de sorption d'eau et la teneur en eau initiale est mesuré en laissant les échantillons, préconditionnés selon différentes teneurs en eau initiales, s'imbiber d'eau déminéralisée pendant que l'absorption d'eau est mesurée.
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Janz, M. Moisture diffusivities evaluated at high moisture levels from a series of water absorption tests. Mat. Struct. 35, 141–148 (2002). https://doi.org/10.1007/BF02533582
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DOI: https://doi.org/10.1007/BF02533582