| Title |
Effect of Interface Treatment on the Structural Behavior of Reinforced Concrete Beams Strengthened with Fiber Reinforced Polymer (FRP) |
| Authors |
Kin Na-Jung ; Lee Eun-Joo ; Shin Yeong-Soo ; Hong Geon-Ho |
| Keywords |
interface treatment ; structural behavior ; strengthened beams with FRP ; substrata grinding ; primer curing |
| Abstract |
This study is aimed to experimentally investigate the effects of interface treatment between the surface and FRP on the structural behavior of strengthened RC beams with FRP. The main test variables of this study are taken as both of substrata grinding and curing condition of primer that increases the adhesion of interface between substrata and FRP. Two groups of 6 specimens are fabricated to investigate the effects of each variable on the structural behavior of FRP strengthened RC beams. One group of the specimens are strengthened under the condition that the substrata surface are not grinded and the primers is cured only for 3 hours and the other group are strengthened under adequate conditions. The specimens are loaded to the failure. The results of this study show that the interface treatment has much influence on the ultimate capacity, ductility and FRP force of beams with strengthening with FRP. They are significantly improved in the case of strengthened beams with proper interface treatment. |