Effect of CFRP Thickness on Load-Carrying Capacities and Failure Modes of Strengthened RC Beams
The effect of thickness of externally bonded carbon fiber laminate (CFRP) on load-carrying capacity and failure modes was analyzed for the strengthened reinforced concrete (RC) beams under bending load. According to the balance equations of applied force and moment, the relation was obtained between ultimate loading of strengthened beam and thickness of CFRP, and the failure modes were predicted for the CFRP strengthened beams. The load-carrying capacity of strengthened RC beam is higher with thicker externally bonded CFRP until it reaches the ultimate loading. The mechanical analysis is in good agreement with the three-point bending experiments performed on CFRP strengthened RC beams.
G. W. Yao et al., "Effect of CFRP Thickness on Load-Carrying Capacities and Failure Modes of Strengthened RC Beams", Advanced Materials Research, Vols. 255-260, pp. 109-112, 2011