STUDY ON BOND MECHANISM OF STEEL FIBER REINFORCED ULTRA RAPID HARDENING CONCRETE APPLIED TO CONCRETE OVERLAY

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  • Momiyama Yoshiyuki
    社団法人土木学会 日本道路公団名古屋管理局技術部
  • Ootomo Hiroshi
    日本道路公団東京第一管理局横浜管理事務所
  • Handa Minoru
    電気化学工業株式会社青海工場セメント・特混研究所研究部
  • Gomi Hideaki
    社団法人土木学会 電気化学工業株式会社特混技術課

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  • 床版上面増厚工法に関する超速硬SFコンクリート付着強度発現機構に関する研究

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The purpose of this study is to investigate bond mechanism of steel fiber reinforced ultra hardening concrete. Bond strength of steel fiber reinforced ultra rapid hardening concrete is influenced by quality of foundation concrete, that is to say the higher compressive strength of foundation concrete, the higher bond strength is. And bond strength decreases with slump down of ultra rapid hardening concrete. This is related to producing time and volume of etringite. This is related to product time and volume of etringite.

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