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권해원(Kwon Hae-Won),박희곤(Park Hee-Gon),이진우(Lee Jin-Woo),김유진(Kim Yoo-Jin),배연기(Bae Yeoun-Ki),이재삼(Lee Jae-Sam) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
The method of managing variations in temperatures between the interior and exterior of a mass member with dominant interior restrictions displays a higher degree of utilization than other crack reduction techniques by occurrence of hydration heat. The thermos curing method is a kind of the crack reduction techniques and in here the important point is the properties of surface curing material. Therefore this experimental research grasps their properties through the various surface curing materials. In addition it differs from ones in the past in examining the crack ratio for it puts variability of concrete tensile strength according to time dependent into consideration and in modeling, then deduces an interpretation. Moreover, a comparative analysis against data measured from a mock-up test specimen was carried out to investigate the cause for any disparities.
굵은 골재 최대치수 변화에 따른 고강도 콘크리트 슬럼프 플로배합 조정에 관한 기초적 연구
권해원(Kwon, Hae-Won),김영수(Kim, Young-Su) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.11
Recently there is not sufficient about researches on the physical properties and dimensional stability by adjustment and change of mix design of slump flow type high strength concrete in domestic. Therefore, the purpose of this study is to purpose the fundamental data of modified slump flow mix method by experimental research. This experiment includes methods to modify the mix design of slump flow type concrete by the variation of size of coarse aggregate. In the result, we found that it is a necessary to increase the ratio of fine aggregate and unit water amount by considering the specific surface area as maximum size of coarse aggregate increases.