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양생온도가 고강도 시멘트 복합체의 자기수축에 미치는 영향
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저자명
한민철,Han. Min-Cheol
간행물명
大韓建築學會論文集 : Journal of the architectural institute of Korea : Structure & construction / 構造系
권/호정보
2011년|27권 12호|pp.171-178 (8 pages)
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

This paper is to investigate experimentally the effect of the curing temperatures on autogenous shrinkage of the high strength cement mortar composites incorporating fly ash(FA) and blast furnace slag(BS) ranged from 0~30%. The curing temperatures ranged from $5^{circ}C$ to $35^{circ}C$ were chosen as parameters to consider the climate condition in the field. As results, an increase in curing temperature led to increase the autogenous shrinkage. The increase of FA resulted in a decrease of the autogenous shrinkage due to the increase of RH in pore, while the use of BS increased the autogenous shrinkage compared with that of plain mixture. For the relationship between equivalent age and autogenous shrinkage, at early stage, good agreements of autogenous shrinkage between different curing temperatures were obtained due to low apparent activation energy($E_a$), while at later age, there were significant variations among the autogenous shrinkage depending on the curing temperature. To achieve better agreements of the autogenous shrinkage among different curing temperatures, it is necessary to obtain accurate $E_a$ reflecting mixture, material and age condition. From the sphere of the paper, it is believed that the effect of the curing temperature on autogenous shrinkage can be evaluated by equivalent age method if accurate $E_a$ is provided.