Paper Title
Modeling Bond Behavior Between Corrosion-Cracked Reinforced Concrete And CFRP Sheets

Abstract
Intact bond between CFRP sheets and deteriorated concrete elements is essential for an efficient repair. Presence of cracking may undermine bond integrity leading to premature detachment of CFRP sheets, hence early failure of retrofitted concrete elements. Cracks caused by reinforcing steel corrosion are the most common and are mainly spotted in bridges and marine structures. Bond behavior between corrosion cracked concrete and CFRP sheets was empirically modeled in terms of key parameters based upon experimentally obtained data from test on pullout specimens. Key parameters included corrosion cracking width and bond width and length of CFRP sheets. The statistical model captured a good correlation with the test results of bond stress-slip relationship and predicted precisely bond characteristics between corrosion-damaged concrete and CFRP sheets in terms of key parameters. The predictions of the present model of literature data (not used in the model development) were the most accurate when compared to those by other published models. Keywords - Carbon Fiber, Laminates, Adhesion, Modeling, separation.