Paper Abstract
Existing structures should be strengthened as a result of age and/or changes in predicted load patterns and magnitudes. To this end, among various options, Fiber Reinforced Polymer (FRP) bars have been increasingly used in reinforced concrete buildings during the last two decades, replacing traditional steel reinforcement, particularly in places with harsh weather conditions because of its simplicity and convenience. In shear and flexural applications, bonding between fiber-reinforced polymer (FRP) bars and concrete is critical for stress transmission between the concrete structure's member and reinforcement. As there are numerous published studies that focus on the FRP-concrete bond strength, the relevant research works on the bond between FRP and concrete are reviewed in this paper. In this comprehensive overview the main papers and their methodologies are provided and discussed, as well as their variations, which used by various researchers. The benefits and drawbacks of each research work are discussed, as well as some views, results and the need for more study. The database findings indicate that FRP bar is an excellent reinforcing material for concrete structures.
