Communication avec acte


Study of the hygric inertia of a vegetal fibre material
Advances in Fluid Mechanics and Heat & Mass Transfer, wseas conference, HTE 2012, Istanbul, p.246-250, Aout 2012.

par   Chadi MAALOUF , Mohammed LACHI , Ton Hoang MAI , E. Wurtz

Résumé :

ABSTRACT : Hygroscopic inertia is defined as the material capacity to adsorb and reject moisture and dampen indoor relative humidity variations. Moisture buffering capacity of different materials such as gypsum and brick, have been widely studied. In this paper, authors investigate moisture transfer under isothermal conditions in a hemp concrete specimen subjected to static variations of air relative humidity. Only one face of the specimen is in contact with indoor air of a climatic chamber. Other faces are made impermeable to water by adding an alumina sheet. The specimen is weighted each hour. Experimentation is also compared to numerical results that take into account hysteresis phenomenon of the sorption curve under the simulation environment SPARK. Results are also compared to data found in literature for gypsum and brick.

KEY WORDS : hemp concrete, moisture buffering capacity, modeling, moisture, hysteresis, SPARK.

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Thématique du GRESPI concernée par cet article :

          -Thermique