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고강도 매스콘크리트의 수화지연효과에 따른 수화발열상승속도 및 자기수축의 저감 특성 평가
김규용,구경모,신경수,이의배,강연우,타케우치 토루,Kim, Gyu-Yong,Koo, Kyung-Mo,Shin, Kyoung-Su,Lee, Eui-Bae,Kang, Yeon-Woo,Takeuchi, Tohru 대한건축학회 2011 대한건축학회논문집 Vol.27 No.1
In this study, to reduce the hydration heat velocity of the high-strength mass concrete at early ages, micro encapsuled retarder that could retard cement reaction was applied, and the changes of autogenous shrinkage and the relationship between the hydration temperature and autogenous shrinkage were investigated. In the result of research, the retardation of the cement hydration process by the micro encapsuled retarder leads to an late setting, with no effect on the development of the compressive strength of concrete. The hydration temperature and hydration heat velocity of high-strength mass concrete can be decreased with the use of the micro encapsuled retarder. A close relationship could be found between the hydration temperature and autogenous shrinkage; the higher the hydration heat velocity, the higher the autogenous shrinkage velocity and the greater the ultimate autogenous shrinkage.