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판상-링형 및 아령형 구속수축시험에 의한 콘크리트의 수축균열특성 평가에 관한 연구
김규용(Kim Gyu-Young),박윤미(Park Yun-Mi),남정수(Nam Jeong-Soo),김영덕(Kim Young-Dock),김호동(Kim Ho-Dong),김무한(Kim Moo-Han) 대한건축학회 2008 大韓建築學會論文集 : 構造系 Vol.24 No.10
Recently because of the lack of natural aggregate, crush saggregate is used. But it is apt to develop initial shrinkage crack and shrinkage crack by plastic and dry shrinkage. so to reduce crack, various attempt like mixing aggregage and reinforcing fiber is doing. However, the basic researches about the quantitative evaluation for concrete's shrinkage crack is lacking. Currently, method of test for drying shrinkage cracking of restrained concrete is to used to evaluate shrinkage in domestic. This study is trying to perform plat-ring restrained shrinkage test as well as method of test for drying shrinkage cracking of restrained concrete through a sort of mixing factors. As a result of experiment, crack point was discovered when using crush aggreage and unit water is high in plat-ring test. And reinforced fiber did not affect at crack initiation time in test for drying shrinkage cracking of restrained concrete.