Experimental study on bonding property between FRP and concrete

摘要

FRP is new type of composite material which substitute for reinforcing steel bar in concrete structure and can solve wear problem caused by steel bar rusting. The result of its bond behavior with concrete is one of the key technologies for its popularization and application to reinforced concrete structure. We will study the bond stress between FRP and concrete about different diameter, different buried depth, different surface forms, different types of FRP and different concrete cover thickness by pull-out test. Based on bond slip curve measured on FRP, the bond slip models existing parametersinto the model, the formulas are obtained in the bond slip curve model, compared with the bond slip curves, analyzes the advantages and disadvantages of each model.