Abstract：Compared with traditional steel reinforcement, the synergy between GFRP (glass fiber reinforced polymer) reinforcement and concrete is relatively worse. In order to fully use the mechanical properties of GFRP-reinforcement, fibers were added into the concrete to improve the crack resistance and toughness, and improve the bonding performance between GFRP-bars and concrete, correspondingly. Pull-out tests of FRP-bars and fiber reinforced concrete were carried out. The improvement of bonding performance between GFRP bars and concrete with different fiber types and volume was analyzed. The effect of bonding length of FRP bars and fiber volume ratio in concrete on bond-slip performance was studied. The corresponding failure modes were investigated, and the optimal fiber volume ratio of concrete was determined. The distribution of bonding stress between polypropylene fiber reinforced concrete and glass fiber reinforced concrete and GFRP bar were obtained. The mechanical behavior of pulling-out process and the bond-slip performance of GFRP bar reinforced concrete with fiber, were clarified.
