Study of the Bond Behavior of Carbon Fiber Reinforced Polymer (CFRP) Bars

Abstract

In this study, experiments were conducted to find the bond characteristics of three different carbon fibre reinforced polymer (CFRP) bars, i.e., DCI C-bars (manufactured by Diversified Composites Inc.), MIC C-bars (manufactured by Marshall Industries Composites Inc.) and Leadline C-bars (manufactured by Mitsubishi Functional Products Inc.) embedded in concrete. In addition to the bond characteristics of three different CFRP-bars, bond characteristics of steel bars were also evaluated. The bond characteristics of steel bars provided the basis for comparison of bond characteristics of CFRP bars. Load-slip relationships were plotted for the CFRP bars and the steel bars. The average bond strengths of DCI bars, MIC bars, Leadline bars and Steel bars are predicted to be 7.92 MPa, 6.89 MPa, 6.27 MPa and 14.47 MPa, respectively.