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Frontiers of Structural and Civil Engineering

Front. Struct. Civ. Eng.    2009, Vol. 3 Issue (3) : 323-329     https://doi.org/10.1007/s11709-009-0041-2
Research articles
Correlation between tension softening relation and crack extension resistance in concrete
Xiufang ZHANG , Shilang XU ,
Department of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China;
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Abstract Changes of the material fracture energy consumption with crack propagation can be described by a crack extension resistance curve, one of the fundamental fracture criteria in crack mechanics. Recently, experimental observation of the fracture behavior in concrete was used to develop a new fracture criterion, the crack extension GR resistance curve, to analyze crack propagation during the entire concrete fracture process. The variation of the crack extension resistance is mainly associated with the energy consumption in the fracture process zone ahead of the stress-free crack tip. The crack extension resistance is then a function of the softening curve, which is a basic mechanical property in the fracture process zone. The relationship between the softening curve and the crack extension GR resistance curve is then analyzed based on results of three-point bending beams tests. The results indicate that the characteristic points of the crack extension resistance GR curve is closely related to the characteristic point on used tension softening curve.
Keywords concrete      fracture process zone      crack extension GR resistance      tension softening curve      
Issue Date: 05 September 2009
 Cite this article:   
Xiufang ZHANG,Shilang XU. Correlation between tension softening relation and crack extension resistance in concrete[J]. Front. Struct. Civ. Eng., 2009, 3(3): 323-329.
 URL:  
http://journal.hep.com.cn/fsce/EN/10.1007/s11709-009-0041-2
http://journal.hep.com.cn/fsce/EN/Y2009/V3/I3/323
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Articles by authors
Xiufang ZHANG
Shilang XU
Xu Shilang, Zhang Xiufang. The new GR crack extension resistance asa fracture criterion for complete crack propagation in concrete structures. China Civil Engineering Journal, 2006, 39 (4): 19―28 (in Chinese)
Zhang Xiufang. New GR crackextension resistance and energy transformation analysis during thewhole fracture process in concrete. Dalian: Dalian University of Technology, 2007 (in Chinese)
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doi: 10.1016/0008-8846(76)90007-7
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doi: 10.1023/A:1018740728458
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doi: 10.1016/S0013-7944(99)00080-6
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doi: 10.1061/(ASCE)0733-9445(1986)112:11(2462)
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