Numerical model of fiber-concrete matrix had been generated

and the influence of interface heterogeneity on single fiber pull-out test of concrete matrix had been studied. Furthermore

load-displacement curves

acoustic emission(AE) accumulation curves and interface shear stress distribution curves could be obtained and interpreted. The results of this numerical study indicate that change of the interface heterogeneity has great effects on peak load and degradation of the load-displacement curves. In addition

the AE accumulation increases with the interface heterogeneity. The interface shear stress distribution curves show that the shear stress distribution curves tend to be smooth with the increase of the interface heterogeneity.