抄録
In this study, in order to investigate the effects of plate volume on load-carrying capacity and debonding behavior of the reinforced RC beams with submerged FRP plate, the static four-point loading tests were conducted taking material properties and mass of FRP plate as variables. Bonding capacity of the adhesive was also investigated comparing with the experimental results for RC beams reinforced with the same adhesive under the dry condition. From this study, the following results were obtained: 1) flexural load-carrying capacity of the RC beams can be improved by increasing plate volume with limitation; 2) plate debonding may be restrained by applying FRP plate with high Young's modulus and/or increasing axial stiffness of the plate; 3) FRP plate was debonded due to the peeling action of the tip of the diagonal shear cracks irrespective of treatment with/without sand coating and material properties of the FRP plate.
