An experimental study on crack propagation at rock-concrete interface using digital image correlation technique

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• 作者：Wei Dong^a ; ^{dongwei@dlut.edu.cn} ; Zhimin Wu^a ; ^{wuzhimin@dlut.edu.cn} ; Xiangming Zhou^b ; ^a ; ^{xiangming.zhou@brunel.ac.uk} ; Na Wang^a ; ^{wangna@163.com} ; Gediminas Kastiukas^b ; ^{Gediminas.Kastiukas@brunel.ac.uk}
• 关键词：Rock-concrete interface ; Digital image correlation ; Fracture process zone ; Crack propagation ; Fracture mode
• 刊名：Engineering Fracture Mechanics
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：171
• 期：Complete
• 页码：50-63
• 全文大小：1309 K
• 卷排序：171

文摘

DIC technology is used to study crack propagation at rock-concrete interface. A shorter full FPZ length makes rock-concrete interface more brittle than concrete. FPZ at peak load is much longer in a rock-concrete specimen under FPS than under TPB. Increase in Mode II component makes crack divert into rock for small a0/D. Fracture mode rapidly falls into Mode I for a composite beam with large a0/D.