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http://dx.doi.org/10.4334/IJCSM.2009.3.1.071

Multiple Cracking Model of Fiber Reinforced High Performance Cementitious Composites under Uniaxial Tension  

Wu, Xiangguo (School of Architecture Engineering, Harbin Engineering University)
Han, Sang-Mook (School of Civil Engineering, Kumoh National Institute of Technology)
Publication Information
International Journal of Concrete Structures and Materials / v.3, no.1, 2009 , pp. 71-77 More about this Journal
Abstract
A theoretical model of multiple cracking failure mechanism is proposed herein for fiber reinforced high performance Cementitious composites. By introducing partial debonding energy dissipation on non-first cracking plane and fiber reinforcing parameter, the failure mechanism model of multiple cracking is established based on the equilibrium assumption of total energy dissipation on the first crack plane and non-first cracking plane. Based on the assumption of the first crack to be the final failure crack, energy dissipation terms including complete debonding energy, partial debonding energy, strain energy of steel fiber, frictional energy, and matrix fracture energy have been modified and simplified. By comparing multiple cracking number and energy dissipations with experiment results of the reference's data, it indicates that this model can describe the multiple cracking behavior of fiber reinforced high performance cementitious composites and the influence of the partial debonding term on energy dissipation is significant. The model proposed may lay a foundation for the predictions of the first cracking capacity and post cracking capacity of fiber reinforced high performance cementitious composites and also can be a reference for optimal mixture for construction cost.
Keywords
cement; composites; multiple cracking; partial debonding; steel fiber;
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