Computer Modelling of Concrete Cover Effect on the Behavior of Fiber Concrete Subjected to Monotonic Pulloutby A. Samer Ezeldin, Stevens Inst of Technology, Hoboken, United States,
Abstract: The objective of this paper is to evaluate the concrete cover effect on the bond behavior of bars embedded in normal and fiber reinforced concrete. Nonlinear finite element analysis is used to analyze pullout mechanisms of reinforcing rebars. Cracking behavior, type of failure, and bond strength are obtained analytically and compared against experimental results. It is found that fibers increase slightly the bond strength, decrease cracks rate of propagation, but do not change the type of bond failure. The good agreement between the finite element analysis and the experimental results indicates that this method can be used to predict the concrete cover effect on the bond mechanism of fiber reinforced concrete.
Subject Headings: Fiber reinforced concrete | Finite element method | Bonding | Pullout behavior | Failure analysis | Nonlinear finite element analysis | Cracking | Computer models
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