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논문 기본 정보

자료유형
학술대회자료
저자정보
박용규 (청주대학교 대학원) 송성빈 (포스코 건설 송도 the #1st WORLD 품질.환경팀) 백병훈 (포스코 건설 송도 the #1st WORLD 현장) 한천구 (청주대학교 건축공학부)
저널정보
한국건축시공학회 한국건축시공학회 학술발표대회 논문집 한국건축시공학회 2006년도 추계 학술논문 발표대회 논문집
발행연도
2006.1
수록면
5 - 8 (4page)

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This study investigates the field application, Songdo the # 1st WORLD, on zero-crack construction of the fundamental mass concrete using double bubble sheets and applying low heat mixture. Experimental results of hydration heat analysis showed that crack modulus of concrete incorporating 20% of blast furnace slag cement was 1.0 in 120 hours, representing 50% probability of crack occurrence, thus requiring additional measures. As for a curing method, a specimen insulating two layers of vinyl chloride+double bubble sheets exhibited only $16.5^{\circ}C$ difference between upper and lower sections, and it also showed favorable workability as well as competitive economic side. Therefore it was determined to use it for curing method in this field. For the curing results of practical field, using 2 layers of vinyl chloride+double bubble sheets and applying low heat mixture on the fundamental mass concrete in 3A residential building exhibited less than only $15^{\circ}C$ difference between surface and center section of that in 5 days elapse and less than $20^{\circ}C$ in 9 days. This means that the crack by hydration heat was prevented, and other fields structures also resisted the plastic shrinkage by insulating the vinyl, sinking crack by second temping, even drying shrinkage by the mixture of low unit water. Therefore the crack on the placement has not been found so far, since the construction was started before 6 month.

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