EFFECT OF INORGANIC ACTIVATOR ON STRENGTH OF SULFATED SLAG CEMENT

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  • KADOTA Hiroshi
    MITSUBISHI MATERIALS CORPORATION, Cement Research Institute（2270 Yokoze, Yokoze-machi, Chichibu-gun, Saitama 368-8504, Japan）
  • YOSHIDA Yuka
    MITSUBISHI MATERIALS CORPORATION, Cement Research Institute（2270 Yokoze, Yokoze-machi, Chichibu-gun, Saitama 368-8504, Japan）
  • MATSUSHIMA Masaaki
    MITSUBISHI MATERIALS CORPORATION, Cement Research Institute（2270 Yokoze, Yokoze-machi, Chichibu-gun, Saitama 368-8504, Japan）
  • SHIMOSAKA Kenichi
    MITSUBISHI MATERIALS CORPORATION, Cement Research Institute（2270 Yokoze, Yokoze-machi, Chichibu-gun, Saitama 368-8504, Japan）

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Other Title
  • 高硫酸塩スラグセメントの強さ発現性に対する無機系刺激剤の効果

Abstract

<p>Aiming at the practical productivity and strength of sulfated slag cement, we examined various inorganic chemicals as activator that enhances the strength, and researched on the effect of combination of specific activators. Disodium hydrogenphosphate, magnesium chloride, magnesium carbonate, magnesium sulfate, calcium chloride and calcium nitrite improved the compressive strength of sulfated slag cement. Furthermore, a remarkable synergistic effect on the strength was obtained by the combination of activators with different activating age. Sulfated slag cement activated by the combination of calcium chloride or calcium nitrite and disodium hydrogenphosphate showed almost the same compressive strength with ordinary Portland cement at the age of 28days.</p>

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