セメント硬化体中の水分移動に関する基礎研究 FUNDAMENTAL STUDY ON WATER TRANSFER IN PORTLAND CEMENT PASTE

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Author(s)

    • 丸山 一平 MARUYAMA Ippei
    • 名古屋大学大学院環境学研究科都市環境学専攻 准教授・博士(工学) Assoc. Prof., Graduate School of Environmental Studies, Nagoya Univ., Dr. Eng.
    • 五十嵐 豪 IGARASHI Go
    • 名古屋大学大学院環境学研究科 大学院生・日本学術振興会特別研究員DC Graduate Student, Graduate School of Environmental Studies, Nagoya Univ., JSPS Research Fellow

Abstract

Water transfer behavior in hardened cement paste is evaluated. For evaluation of water transfer, mass loss of specimens over time is measured and Boltzmann's method is applied to measured data. At the same time, desorption isotherm of hardened cement paste is evaluated. Using the diffusion coefficient for nominal water content and desorption isotherm, water conductivity for chemical potential of water in hardened cement paste is derived. Nine hardened cement paste specimens, which have different porosity, are tested and using these data, predicting model of water conductivity is proposed.<br> The proposed model needs the properties of hardened cement, such as, maximum water content at 20°C degree, water vapor BET surface area, and water content for predicting the water conductivity. According to the simulated results, the temperature dependency of water conductivity is obvious. Evaluation of temperature dependency of water conductivity is remained to be future issue.

Journal

  • Journal of Structural and Construction Engineering (Transactions of AIJ)

    Journal of Structural and Construction Engineering (Transactions of AIJ) 76(668), 1737-1744, 2011

    Architectural Institute of Japan

Codes

  • NII Article ID (NAID)
    130004752491
  • NII NACSIS-CAT ID (NCID)
    AN10438559
  • Text Lang
    UNK
  • ISSN
    1340-4202
  • NDL Article ID
    11267161
  • NDL Source Classification
    ZN1(科学技術--建設工学・建設業)
  • NDL Call No.
    Z16-1419
  • Data Source
    NDL  J-STAGE 
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