• assessment of the unsaturated water transport properties of an old concrete: determination of the pore-interaction factor

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
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     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 post-processing 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.

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