Investigation (result) of Quality Change of Cement after the JIS Revised in 2003

  • Nishimoto Y.
    三井住友建設 (株) 技術研究開発本部技術研究所
  • Taniguchi H.
    三井住友建設 (株) 技術研究開発本部技術研究所土木研究開発部

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Other Title
  • 2003年JIS改正後のセメントの品質変動に関する調査結果
  • 2003ネン JIS カイセイゴ ノ セメント ノ ヒンシツ ヘンドウ ニ カンスル チョウサ ケッカ

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Abstract

JIS R 5210 “Portland Cement” was revised in 2003, and the chloride ion of ordinary portland cement was deregulated. However, the transition of cement quality including the chloride ion is not clarified. In authors' investigation results, it was confirmed that the cement quality supplied by each cement manufacturing company was almost steady, but the quality of moderate-heat portland cement and the low-heat portland cement is different according to the manufacturing company. The chloride ion of ordinary portland cement keeps increasing after 2003, and the maximum value reaches 0.030%. Even if the cement manufacturing company is the same, the chloride ion of the cement sold in various places is different.

Journal

  • Concrete Journal

    Concrete Journal 46 (11), 9-17, 2008

    Japan Concrete Institute

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