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《Concrete》 2005-10
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Experimental research on cracking for different types of induced joints of RCC arch dam

WEI Tian-qin~1,LIU Hai-cheng~(1,2) (1.Design and Research Institute of Hydraulic and Waterpower of Liaoning Province,Shenyang 110006,Liaoning,China; 2.State Key Laboratory of Coastal Offshore Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China)  
Based on the experimpental results on two types of RCC speciment(i.e.the immerged rectangular crack and penetrated crack respectively)with different weakening ratio under axial tensile stress,the relation between equivalent strength and ratio of reduced area for specimens is obtained.The results show that the fracture toughness of RCC materials is approximately same as that of normal concrete materials,and the equivalent strength for specimens with immerged rectangular crack is less than that of specimens with penetrated crack,the value of ratio is 4% to 8%.Therefore,the discontinuous rectangular type of induced joints is suggested to applied in RCC arch dams.
【CateGory Index】: TV642.2
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