STP1495

    The Effect of Vertical Distribution of Water Permeability on the Modeled Neutralization Process in Concrete Walls

    Published: Jan 2007


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    Abstract

    The aim of this paper was to predict the durability of concrete walls. Because liquid movement is important in discussing the neutralization process, the vertical distribution of the permeability in a concrete wall was measured. In a 20 cm high sample, the permeability clearly showed a nonuniform vertical distribution. Next, an analytical model was proposed to predict the neutralization process taking into account the influence of acid rain. Based on this model, the simulation was carried out with permeability as a parameter. The results showed that neutralization was accelerated due to acid rain in regions with a high permeability and retarded in regions with a low permeability. Thus, it can be concluded that the influence of acid rain on the neutralization process may differ depending on the position in the concrete structure.

    Keywords:

    durability of concrete structure, neutralization, acid rain, water permeability


    Author Information:

    Kishimoto, Yoshihiko
    Postdoctoral fellow, Hokkaido University, Sapporo,

    Hokoi, Shuichi
    Professor, Kyoto University, Kyoto,

    Harada, Kazunori
    Associate Professor, Kyoto University, Kyoto,

    Takada, Satoru
    Associate Professor, Kobe University, Kobe,


    Paper ID: STP45410S

    Committee/Subcommittee: C16.16

    DOI: 10.1520/STP45410S


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