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응결시간차를 활용한 매스콘크리트 수화열 조정공법의 현장적용
심보길 ( Sim Bo-kil ),윤치환 ( Yoon Chi-whan ),손성운 ( Son Sung-un ),한민철 ( Han Min-cheol ),오선교 ( Oh Seon-kyo ),한천구 ( Han Cheon-goo ) 한국구조물진단유지관리공학회 2001 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.5 No.2
This paper presents field application test results of mass concrete using super retarding agent. The field test was carried out at mat foundation (thickness lm) of newly constructed information center of Chongju university and apartment house constructed with Daewon corporation. 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℃, 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.