EXPERIMENTAL INVESTIGATION ON SHEAR BEHAVIORS OF CORRODED BEAMS REPAIRED IN FLEXURE BY STEEL FIBER-REINFORCED CONCRETE

Abstract

In order to improve the performance of the corroded beams, the methods for structural intervention have been gradually created. This paper presents an experimental investigation on the shear behaviors of the corroded beams repaired in flexure by steel fiber-reinforced concrete (SFRC). The factors for experiments are the corrosion degrees, 0%, 12% and 17%, and the volume fractions of the steel fibers, 1.0%, 1.5% and 2.0%. The test results of the shear capacity, the load–deflection responses and the failure modes are assessed. This study indicates that the shear performance of corroded beams increases as the corrosion degree increased due to the change of the shear resisting mechanism in the beams. Furthermore, the corroded beams repaired by SFRC provide the higher shear capacity than that of the corroded beams with no intervention.