| Title |
Bond Characteristics between Fiber Reinforced Polymer(FRP) Sheet and Concrete |
| Keywords |
Fiber-reinforced Polymer Sheet ; FRP ; Bond ; Slip ; Concrete |
| Abstract |
Fiber-reinforced polymer (FRP) sheets are being successfully used worldwide for strengthening existing reinforced concrete structures which have not insufficient capacity. Although FRP sheets show the excellent durability and high strength, the bond characteristics between concrete and FRP is not well recognized. In this study, six specimens were prepared for two type FRP sheets (carbon and polyacetal) to evaluate the behavior of FRP-concrete interfacial bond. A direct tensile test was conducted and the test results show that fiber type influences both the bond strength and shape of strain distribution. The local bond stress-slip relations were obtained from test results, but it was scattered for the carbon type specimens. A bilinear and Popovics's equation type model were used to predict local bond stress-slip relationship for the polyacetal type specimens. Finally, it was known that a bilinear model is suitable for the test results. |