INFLUENCE OF THE WETTABILITY AND ANGLE OF FORM ON THE CHARAC-TERISTICS OF SURFACE VOIDS IN SELF-COMPACTING CONCRETE

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  • ICHIMIYA Kazuo
    社団法人 土木学会 大分工業高等専門学校 土木工学科
  • IDEMITSU Takashi
    社団法人 土木学会 九州工業大学 工学部建設社会工学科
  • YAMASAKI Takehiro
    社団法人 土木学会 九州工業大学 工学部建設社会工学科

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Other Title
  • 粉体系高流動コンクリートの表面気泡に及ぼす型枠の濡れと傾斜角度の影響
  • フンタイケイ コウリュウドウ コンクリート ノ ヒョウメン キホウ ニ オヨボス カタワク ノ ヌレ ト ケイシャ カクド ノ エイキョウ

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Abstract

The surface void of self-compacting concrete has a tendency to be generated easily by its high viscosity and non-compaction. In this research, the relation between the generation factor of the surface void and the mechanism of the generations was considered experimentally. The examined items are shown below. (1) Form release agent's types were changed, and the ratio of depth and diameter of surface void (h/d) was measured. As a result, when hid was large, the surface void was generated internally concrete. (2) The contact angle was measured from the maximum height of drop of liquid on horizontal form. And, the degree of wettability of form was shown numerically. And, the relation between wettability and surface void was made clear. (3) The void was artificially generated on the surface of form. And, the relation between the maximum volume of void which adhered to form and the angle of the form was measured.

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