Properties of Bleeding Reduction of Concrete Using AE Water Reducing Agent for Reduction of Bleeding

블리딩저감용 AE감수제를 사용한 콘크리트의 블리딩 저감 특성

  • 김기훈 (청주대학교 건축공학부) ;
  • 황인성 (청주대학교 대학원) ;
  • 나운 (삼성물산 건설부문 주택기술팀) ;
  • 임주혁 (삼성물산 건설부문 주택기술팀) ;
  • 한천구 (청주대학교)
  • Published : 2003.11.15

Abstract

This study is intended to investigate the fundamental properties of concrete which AE water reducing agent for reduction of bleeding is used, and the properties of bleeding reduction. According to the results, when the adding ratio of AE water reducing agent for reduction of bleeding increases, a range of normal fluidity and aimed air content arc satisfied, setting time is faster than that of normal AE water reducing agent. And bleeding amount decreases, bleeding speed is highest between 60 and 90 min, and sinking depth increases drastically in 60 min. When, AE water reducing agent for reduction of bleeding is added, compressive strength shows a slight variation by air content, but there is not a large influence by addition of AE water reducing agent for reduction of bleeding. Synthetically, it proves that AE water reducing agent for reduction of bleeding satisfies aimed air content in the range of normal slump and can reduce only bleeding without quality variation of compressive strength.

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