| Title |
Bond Capacity of Concrete Member Strengthened by Various Methods Using FRP Plate |
| Authors |
Seo Soo-Yeon ; Oh Jae-Gil ; Choi Ki-Bong |
| Keywords |
Concrete ; External Bond Retrofit ; Near-Surface-Mounted Retrofit ; FRP Plate ; Bond Test ; Bond Length ; Shear Key |
| Abstract |
Recently, FRP (Fiber Reinforced Polymer) has been widely applied in retrofit of concrete member owing to its ease construction and high structural capacity compared to other materials. External Bond Retrofit (EBR) using FRP sheet or plate is most popular method for flexural retrofit of concrete member. In strengthened concrete member using this method, however, problems such as dismantling of FRP were founded after retrofit. This causes a strength reduction of the retrofitted member. To resolve this problem, Near-Surface-Mounted Rertofit (NSMR) method was developed and being studied. In this paper, bond capacities of EBR and NSMR using FRP plate were studied experimently and results were compared each other. Main variables in the test were retrofit method, bond length and existence of shear key. From the test results, it was found that the member strengthened by NSMR had almost 1.5 times higher bond strength than that by EBR. The contribution of shear key was not observed when the splitting failure of concrete governed. |