CHANGES ASSOCIATED WITH THE HEATING OF THE CARBONATION CEMENT PASTE

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  • SHOJI Makoto
    DENKA Co. Ltd., Infrastructure & Social Solutions, Special Cement Additives Dept.（Nihonbashi Mitsui Tower, 2-1-1, Nihonbashi-Muromachi, Chuo-ku, Tokyo 103-8338, Japan）
  • MORIOKA Minoru
    DENKA Co. Ltd., Omi Plant, Cement and Special Cement Additives Reserch Laboratory（2209, Omi, Itoigawa-shi, Niigata 949-0393, Japan）
  • YOKOZEKI Kosuke
    KAJIMA Co. Ltd., Technical Research Institute（2-19-1, Tobitakyu, Chofu-shi, Tokyo 182-0036, Japan）
  • IMAMOTO Keiichi
    TOKYO UNIVERSITY OF SCIENCE, Faculty of Engineering Division Ⅱ, Department of Architecture（6-3-1, Niijuku, Katsushika-ku, Tokyo 125-8585, Japan）

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Other Title
  • 強制炭酸化したセメント硬化体の加熱に伴う変化

Abstract

<p>The cement paste carbonated, was studied change with heating. Sealing curing cement paste, the decomposition of calcium hydroxide and heated to more than 400℃, the pore of about 0.1μm was increased. On the other hand, no significant change was observed in were subjected to carbonation curing cement paste changes and void structure of even phase composition was heated up to 600℃. When heated to 700℃, the pore of about 0.01μm was increased. Further, when the active poor carbonation in hydraulic was used as part of a high gamma-C2S the binder, void volume after heating was reduced.</p>

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