Volume 6, Issue 8 (September 2009)

    Concrete Hygrothermal Properties and the Influence of their Variability on Moisture Movement in Concrete Walls

    (Received 17 July 2008; accepted 30 June 2009)

    Published Online: 2009

    CODEN: JAIOAD

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    Abstract

    The vapor permeability, equilibrium moisture content, hydraulic conductivity, and thermal conductivity of concrete specimens with three different strengths were measured under various conditions of temperature and relative humidity. Based on the measured results, the relationship between hygrothermal properties and strength, and the relationship between hygrothermal properties, water content, and temperature were considered. The variability of measured hygrothermal properties was clarified. Then, to evaluate the influence that the variability of hygrothermal properties has on the hygrothermal behaviors of a concrete wall, a water absorption experiment using a small-scale concrete wall with tile finishing was carried out under constant temperature. The experimental result shows a significantly difference between three specimens in the hygrothermal behaviors, which is partly because of the variability of the hygrothermal properties.


    Author Information:

    Onmura, Sadayuki
    Technical Research Institute, Asanuma Corporation, Osaka, Takatsuki-Shi

    Hokoi, Shuichi
    Dept. of Architecture and Architectural Engineering, Graduate School of Engineering, Kyoto Univ., Kyoto,

    Matsushita, Takayuki
    Dept. of Architecture, Graduate School of Engineering, Kobe Univ., Hyogo,

    Ogura, Daisuke
    Dept. of Architecture and Architectural Engineering, Graduate School of Engineering, Kyoto Univ., Kyoto,

    Kominami, Kazuya
    General Building Research Corporation of Japan, Osaka,

    Yasui, Yoshitaka
    Research and Development Dept., Environmental Technology Laboratory, Daikin Industries Ltd., Osaka,


    Stock #: JAI102027

    ISSN: 1546-962X

    DOI: 10.1520/JAI102027

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    Author
    Title Concrete Hygrothermal Properties and the Influence of their Variability on Moisture Movement in Concrete Walls
    Symposium Second Symposium on Heat-Air-Moisture Transport: Measurements and Implications in Buildings, 2009-04-20
    Committee C01