Bond Capacity of Pseudo-Ductile FRP Hybrid Sheet to Strengthen RC Members

12 concrete blocks, on which hybrid fibrous sheets (carbon fiber and glass fiber) had been bonded, were subjected to tensile load in order to estimate properties of the bonded interface. the sheet length was varied by 100 mm, 200 mm and 400 mm. It was found that more than 150 mm bond length is required to achieve the maximum bearing capacity of the interface. In this study, maximum bond stress τF,max, ultimate slip SFU of the interface were estimated τF,max= 3.0 MPa and SFU = 0.175 mm, respectively.