Study on bending performance of RC beams with corroded compression rebars

Abstract

In this paper, the movement of the neutral axis caused by the corrosion of the compression bars and the change in bending performance caused by the movement of the neutral axis are investigated. In order to simulate various degradation periods, RC beams with corroded compression bars were fabricated by electrical corrosion and subjected to bending tests.It was found that when the compression bars corroded, the stress was not transferred to the concrete part above the corrosion crack.In addition, whether or not the corrosion cracks penetrate the cross-section is an important factor controlling the residual performance.