Reduction of Autogenous Shrinkage of HPFRCC Depending on Changes of ERCO Replacement Ratio and Fiber Replacement Ratio

ERCO 혼입율과 섬유혼입비 변화에 따른 HPFRCC의 자기수축저감

  • 이제현 (청주대학교 건축공학과) ;
  • 백철 (청주대학교 건축공학과) ;
  • 조만기 (청주대학교 건축공학과) ;
  • 조성준 (청주대학교 건축공학과) ;
  • 이종태 ((주)태민엔지니어링) ;
  • 한천구 (청주대학교 건축공학과)
  • Published : 2016.05.19

Abstract

As the treatments of many kinds of explosive objects increase recently, it is in the trend that explosion accidents increase. Thus, many studies on HPFRCC (High-performance Fiber-reinforced Cement Composites) whose ductility is enhanced are being conducted actively in order to minimize the damages from explosion accidents. However, HPFRCC, the self-shrinkage of HPFRCC is on the rise as a problem since it becomes ultra-high strengthened by using low W/B. Thus, in this study, it is intended to evaluate the capacity for reducing the self-shrinkage of HPFRCC depending on some changes of ERCO(Emulsified Refined Cooking Oil) replacement ratio and the fiber replacement ratio between some short steel fibers (SS) and some long organic fibers (OL). As a result, it was found that some excellent effects are exerted since the self-shrinkage was reduced a lot as the ERCO replacement ratio increases and the fiber replacement ratio of SS rather than OL increases.

Keywords