Effects of stirrups in spliced region on the bond strength of corroded splices in reinforced concrete (RC) beams

摘要

This study has addressed effects of stirrups-caused confinement on the concrete-bar bond strength of lap-spliced RC beams which have been corroded. Twenty of such beams with different stirrup spacing in the spliced region were subjected to corrosion, and the percentages of corrosion of the lap-spliced tensile bars were considered as the variable of this study; these beams were tested under four-point bending test. Tests results have shown that the increased stirrups in the spliced region increased the bond strength, ductility, and energy dissipation potential. Stirrups were more effective in high corrosion; at 25% corrosion. (C) 2019 Published by Elsevier Ltd.