Shear performance of RC beams with spatial distribution of bond deterioration in longitudinal tension bars

Abstract

This paper carried out an experimental investigation on the effects of spatial distribution of bond degradation on the load-carrying mechanism and failure mode of RC beams. Bond degradation was simulated using artificial method and shear performance was investigated through three-point loading tests. Test results indicate that: It was more dangerous for RC beams have the bond deterioration area near the supporting position than in the vicinity of middle portions; compared with the control specimen placed with ordinary steel bars, the specimens using the steel bars with surface coating exhibited the same shear behavior.