Study on Free Water Behavior in Fresh Concrete and Dewatered Concrete

  • Inukai T.
    東海コンクリート工業 (株) 企画・技術部技術グループ
  • Mishima N.
    三重大学大学院工学研究科建築学専攻
  • Hatanaka S.
    三重大学大学院工学研究科建築学専攻

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Other Title
  • フレッシュコンクリート中の自由水の挙動と透水・脱水メカニズム
  • フレッシュ コンクリート チュウ ノ ジユウスイ ノ キョドウ ト トウスイ ダッスイ メカニズム

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Abstract

Fresh concrete generally contains bleeding water (free water) which is considered to deteriorate the quality of reinforced concrete structures. Therefore, it is very important to clarify the behavior of free water in evaluating the behavior of bleeding and segregation, and the quality of reinforced concrete structures. Main purpose of the present study is to examine the behavior of free water in fresh concrete and in various kinds of dewatered concrete. In this report, the behavior of free water in bleeding and the dewatered mechanism are discussed, based on series of newly proposed visualization tests on the permeable form dewatering, press dewatering and vacuum processing methods as well as the bleeding.

Journal

  • Concrete Journal

    Concrete Journal 45 (3), 15-22, 2007

    Japan Concrete Institute

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