温度履歴を受ける各種ポルトランドセメントペーストの若材齢体積変化  [in Japanese] EARLY AGE VOLUME CHANGING OF PORTLAND CEMENT PASTE UNDER HIGH TEMPERATURE HISTORY  [in Japanese]

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Author(s)

    • 寺本 篤史 TERAMOTO Atsushi
    • 名古屋大学大学院環境学研究科都市環境学専攻 大学院生・日本学術振興会特別研究員DC Graduate Student, Dept. of Environmental Engineering and Architecture, Nagoya Univ., JSPS Research Fellow
    • 五十嵐 豪 IGARASHI Go
    • 名古屋大学大学院環境学研究科都市環境学専攻 大学院生・日本学術振興会特別研究員DC Graduate Student, Dept. of Environmental Engineering and Architecture, Nagoya Univ., JSPS Research Fellow
    • 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., Dept. of Environmental Engineering and Architecture, Nagoya Univ., Dr. Eng.

Abstract

In this paper, total strain and time dependent change of thermal expansion coefficient (TEC) under temperature history of cement paste with W/C=0.3,0.4,0.55 whose binder is normal Portland cement, moderate Portland cement and low heat Portland cement were investigated. In all conditions, a rapid reduction of TEC was observed in very early age and TEC showed the local minimum value around 12-18hour. After that, it gradually increased with reduction of moisture content. During that term, low heat cement could reduce this increment of TEC under high temperature history. This time dependent change of TEC could produce shrinkage as thermal strain with temperature dropping. The amount of this thermal strain is relatively large, and in the case of W/C = 0.4, low heat cement shows lower thermal strain.

Journal

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

    Journal of Structural and Construction Engineering (Transactions of AIJ) 77(672), 153-159, 2012

    Architectural Institute of Japan

Codes

  • NII Article ID (NAID)
    130004752512
  • NII NACSIS-CAT ID (NCID)
    AN10438559
  • Text Lang
    JPN
  • ISSN
    1340-4202
  • NDL Article ID
    023516625
  • NDL Call No.
    Z16-1419
  • Data Source
    NDL  J-STAGE 
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