Generation of Hydration Heat of the Concrete Combined Coarse Particle Cement and Blast Furnace Slag

조분 시멘트와 고로슬래그를 조합 사용한 콘크리트의 수화발열 특성

  • 노상균 (청주대학교 대학원) ;
  • 백대현 (청주대학교 대학원) ;
  • 장덕배 (청주대학교 대학원) ;
  • 김영필 (아세아시멘트(주) 제천공장 기술연구소) ;
  • 차완호 (아세아시멘트(주) 제천공장 기술연구소) ;
  • 한천구 (청주대학교 건축공학과)
  • Published : 2008.05.09

Abstract

This study, having combined and displaced blast furnace slag("BS" hereinafter) known as admixture material that delays hydration reaction with coarse particle cement("CC" hereinafter) collected in particle classification method during ordinary portland cement("OPC" hereinafter), reviewed the hydration heat characteristics affecting the concrete. To reduce hydration heat, the study plain-mixed which used 100% OPC for W/B 50% level 1, displaced CC at level 3 of 25%, 50% and 75% for OPC, and by displacing BS with admixture material at level 5 of 0%, 20%, 40%, 60% and 80% for cement(OPC+CC), experimented totally 16 batches. As a result of experiment, in the case of flow, the more CC displacement rate increased, the more it tended to decrease, and the more BS displacement rate increased, the more it decreased. Also, as for simple adiabatic temperature rise by the CC and BS displacement rates, it decreased as displacement rate increased, and particularly in the case of displaced BS of 80%, It showed temperature reduction effect of about 63% companing with plain. Compressive strength decreased in proportion to displacement rate, however strength reduction increment was shown to decrease with age progress.

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