Bond Characteristics of Hybrid Fiber Polymer Reinforcing bars with Different Relative Rib Area

하이브리드 FRP 보강근의 상대 리브면적에 따른 부착 특성

The bond characteristics of two types hybrid FRP (fiber reinforced polymer) reinforcing bars with different rib geometry were analyzed experimentally. Two types of hybrid FRP. reinforcing bars such as spiral and cross type with different relative rib area were considered in this test. All testing procedures including specimens preparation, set-up of test equipments and measuring devices were made according to the recommendations of CSA Standard S806-02. From the test results, it was found' that cross type hybrid FRP reinforcing bars showed the higher bond strength than that of spiral type's due to the higher relative rib area.