Journal Home Online First Current Issue Archive For Authors Journal Information 中文版

Frontiers of Structural and Civil Engineering >> 2009, Volume 3, Issue 3 doi: 10.1007/s11709-009-0041-2

Correlation between tension softening relation and crack extension resistance in concrete

Department of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China;

Available online: 2009-09-05

Next Previous

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 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 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 curve is closely related to the characteristic point on used tension softening curve.

Related Research