Experimental study on Bond stress-Slip relationship of Corroded small diameter Reinforcing bars

Abstract

The purpose of this paper is to examine the bond-slip performance of corroded small-diameter reinforcing bars in concrete and double-pull tests were carried out on specimens in which small-diameter reinforcing bars corroded by electrolytic corrosion were embedded in concrete. From the strain distribution of reinforcing bars, the relationships between bond- stress(τ) and slip( S) were delived and the effect of slip of reinforcing , amount of corrosion and crack width occurred on concrete surface on maximum bond strength were obtained. The results obtained are as shown below.