Shear Strengthening of Reinforced Concrete (RC) T-beams

Reinforced Concrete (RC) beams have been retrofitted with Fibre-Reinforced Polymer
(FRP) composite externally in order to increase the strength. There are many researches
regarding beams strengthened with FRP nowadays. However, there are still not enough
aspects on behaviour of externally bonded FRP to RC beams. One of them is the effect of
the interaction between internal shear reinforcement and externally bonded FRP. Besides
that, the effect of shear reinforcement ratio is still questionable. Ten RC T-beams has been
set up for this experimental program to study both of effect of two shear component and
to determine the shear reinforcement ratio. The results of this experiment are obtained
most likely similar with many other researchers which shows that the importance of
internal steel stirrups and the effectiveness of externally bonded FRP. In addition,
continuous wrap of FRP has greater FRP contribution to shear resistance as compared to
small amount of FRP usage. This reflect the effectiveness of FRP based on the percentage
of the usage.