An experimental investigation on the FPZ properties in concrete using digital image correlation technique |
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Authors: | ZhiMin Wu Hua Rong JianJun Zheng Feng Xu Wei Dong |
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Affiliation: | aState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, PR China;bSchool of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, PR China |
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Abstract: | This paper presents an experimental investigation on the properties of the fracture process zone (FPZ) in concrete using the digital image correlation (DIC) technique. Based on the experimental results, it is found that the FPZ length increases during crack propagation but decreases after the FPZ is fully developed. The FPZ length at the peak load and the maximum FPZ length increase with an increase in specimen height, but decrease by increasing the notch depth to specimen height ratio. It is also found that the crack extension length at the peak load is about 0.25 times the ligament length. |
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Keywords: | Concrete Fracture process zone Digital image correlation technique Crack opening displacement Fracture process zone length |
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