Liquidity and Mechanical Properties of Concrete by Fluidity Retention Agent Mix Rate Change

유지제 혼입율 변화에 따른 콘크리트의 유동성 및 역학적 특성

  • 박병관 (청주대학교 건축공학과 대학원) ;
  • 최성용 (청주대학교 건축공학과 대학원) ;
  • 배장춘 (청주대학교 건축공학과 대학원) ;
  • 노동현 (청주대학교 건축공학과 대학원) ;
  • 한민철 (청주대학교 건축공학과) ;
  • 한천구 (청주대학교 건축공학과)
  • Published : 2008.11.14

Abstract

This research analyzed the basic characteristics of unhardened concrete and the compression strength characteristics of hardened concrete according to liquidity retention agent mix rate change to improve the liquidity fluidity retention performance of high performance concrete, and produced the following results. The moment fluidity retention agent is added according to fluidity retention agent mix rate change, which increased fluidity retention agent mix rate, slump flow decreased, and in the case of slump flow according to the progress time change by the fluidity retention agent mix rates, the more fluidity retention agent mix rate increased, the lower slump flow change rate became. The moment fluidity retention agent is added according to fluidity retention agent mix rate change, fluidity retention agent mix rate increased compared to non-mixture of fluidity retention agent, and the air amount by progress time change by the fluidity retention agent mix rates slightly increased, however target range is still met and unit volume mass is inversely proportional to air amount. Compression strength according to age progress by the fluidity retention agent mix rates was shown to increase slightly with increase in fluidity retention agent mix rate, and yet the difference was not significant.

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