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보수시공용 저온경화 시멘트모르타르 개발에 관한 실험적 연구
유조형(Yoo Jo-Hyeong),이한승(Lee Han-Seung),경제운(Kyung Je-Woon) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
The object of this study is to develop the strength behavior of mortar under low-temperature(4℃~10℃). For this, with carrying out paste experiments, cure a paste as a fixed temperature of -10℃ base a classified mineral content that can be hardened at low temperature. then investigate a temperature record and specific strength. And, normal mortar possessing the W/C ratio 0.45 and repair mortars were cured at each primary factor variation of three classified curing stage, which are initial curing(20℃ standard sealed curing), main curing(low temperature(-10℃) sealed curing) and subsequent curing(4℃ sealed curing). Hence, the strength develop and freezing resistance of mortar were investigated and analyzed comparing the compressive strength and physical properties of cured mortar at the age of one and three days with those of the standard cured mortar. For micro structure analysis, we took some pictures of micro structure by SEM & TG/DTA in each type of curing temperature at same age.
유조형 ( Jo Hyeong Yoo ),김우재 ( Woo Jae Kim ),홍석범 ( Seok Beom Hong ) 한국건축시공학회 2013 한국건축시공학회 학술발표대회 논문집 Vol.13 No.1
In order to evaluate the properties of reduced heat of hydrationof concrete mixed with slag, in the present study, we have evaluated by experimental and analytical characteristics of heat of hydration of concrete using the latent heat material and slag.