Bond Behavior between Fiber-Reinforced Polymer Laminates and Concrete

Abstract

This paper studies the bond behavior between fiber-reinforced polymer laminates and concrete. In order to obtain the local bond stress (LBS) vs. slippage relationship, a double-face shear type bond test was conducted. Primary test variables were the types of fiber and concrete. Test results show that fiber stiffness influences both bond strength and shape of stress distribution. However, the LBS-slip relationships are not influenced by the type of fiber. Only the maximum LBS increases as concrete compressive strength also increases. A new model representing the LBS vs. slippage relationship is offered using Popovic's formula, which has been adapted to present the concrete compressive stress-strain relationship. A numerical analysis was performed to confirm the model, and experimental results are presented. The analytical results show good agreement with the bond strength and strain distribution found in the experimental results.