INVESTIGATION OF FREEZE-THAW ACTION ON CONCRETE WITH SEVERAL CEMENT TYPES

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  • HANAOKA Atsuhiro
    HOKKAIDO UNIVERSITY, Graduate School of Engineering（Nishi8, Kita13-jo, Kita-ku, Sapporo-shi, Hokkaido 060-8628, Japan）
  • KURUMISAWA Kiyofumi
    HOKKAIDO UNIVERSITY, Faculty of Engineering（Nishi8, Kita13-jo, Kita-ku, Sapporo-shi, Hokkaido 060-8628, Japan）

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Other Title
  • 複数のセメント種を用いたセメント硬化体に及ぼす凍結融解作用の実験的検討

Abstract

<p>From the viewpoint of CO2 reduction, concrete structures using blast furnace slag powder or fly ash are increasing. However, it has been pointed out in previous studies that blended cement concrete differs from ordinary Portland cement concrete in terms of the mechanism of frost damage deterioration. The purpose of this study is to quantitatively clarify the factors affecting freeze-damage deterioration using cementitious materials with different types of cement. The results showed that the resistance to freeze-thaw degradation differed among cement types, and that the air content, air spacing factor, and compressive strength could not explain the differences, but the freezing water content and coarse porosity could explain the degree of freeze-thaw degradation.</p>

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