The Concrete Fracture Performance Response to the Interface Transition Zone Parameters Based on Mesoscopic Simulation

Abstract:

The interface transition zone (ITZ) has a significant impact on the concrete’s mechanical properties and fracture modes. For the influence of ITZ’s strength and elastic modulus, the extended finite element method (XFEM) is adopted to simulate the mesostructure failure process by virtue of random aggregate model under uniaxial tension. The results show that ITZ’s strength and elastic modulus have a certain effect on the mechanical properties and fracture modes. With the tensile strength of ITZ increasing, the fractured modes transit from single coalescent crack to multiple non-coalescent cracks and the fracture energy increases, the ductility of concrete is enhanced. With the elastic modulus of ITZ increasing, the concrete’s elastic modulus increases, the tensile strength and the fracture energy decrease.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 3482-3486
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.3482
• Online since: May 2012
• Authors: Min Du, Liu Jin, Xiu Li Du, Yan Zhao
• Keywords: Concrete, Extended Finite Element Method (XFEM), Failure Mode, Interface Transition Zone, Mechanical Performance, Random Aggregate Model

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