Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)

Korea Concrete Institute (한국콘크리트학회)
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A Method on the Control of Hydration Heat of Mass Concrete Considering the Difference of Setting Time

응결시간차를 활용한 매스콘크리트의 수화열 조정공법

  • 심보길 (청주대학교 건축공학부) ;
  • 윤치환 (청주대학교 건축공학부) ;
  • 한민철 (청주대학교 건축공학부) ;
  • 김기철 ((주)선엔지니어링 종합건축사사무소) ;
  • 오선교 ((주)선엔지니어링 종합건축사사무소) ;
  • 한천구 (청주대학교 건축공학부)
  • Published : 2001.11.01
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Abstract

This Paper Presents field application test results of mass concrete using super retarding agent. The field test was carried out at mat foundation(thickness 1m) of newly constructed information center of Chongju university. Placing lift composed of 2 layers, and each layer is 50cm. Fly ash and flowing method is also applied. Difference of setting time of concrete between with super retarding agent and without super retarding agent is considered. Concrete without super retarding agent is placed at upper layer and with super retarding agent at lower layer According to test results, the reducing method of hydration heat considering difference of setting time with super retarding agent can reduce the highest temperature about 3~4$^{\circ}C$, and delay the peak time about 3~4days. Compressive strength using super retarding agent is somewhat higher than that of normal concrete. Accordingly, super retarding agent does not affect the strength development.

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