セメント硬化体の水蒸気吸着等温線モデル WATER VAPOR ADSORPTION ISOTHERM MODEL OF 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 博士課程前期学生 Graduate student, Graduate School of Environmental Studies, Nagoya Univ.

Abstract

Adsorption and desorption isotherm model of hardened cement paste under 20 °C is proposed. Adsorption and desorption isotherm of hardened cement paste with different water cement ratio, temperature history, and different degree of hydration were experimentally studied. Based on the experimental data, following characteristics were derived: 1) BET surface are of adsorption process and desorption process has linear relationship, 2) Relationship between statistical thickness of adsorption and relative humidity is identical in the range below 40%RH, 3) t-curve can be derived from the relationship between statistical thickness of adsorption and relative humidity, 4) difference between statistical thickness of adsorption and t-curve has a linear relationship between Kelvin radius, 5) virgin desorption curve value less than 40%RH has similar value of those of desorption curve after drying pre-treatment, 6) virgin desorption curve has a linear relationship with relative humidity. Based on these experimental points, empirical adsorption model is proposed.

Journal

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

    Journal of Structural and Construction Engineering (Transactions of AIJ) 76(664), 1033-1041, 2011

    Architectural Institute of Japan

Codes

  • NII Article ID (NAID)
    130004752450
  • NII NACSIS-CAT ID (NCID)
    AN10438559
  • Text Lang
    UNK
  • ISSN
    1340-4202
  • NDL Article ID
    11142858
  • 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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