Retrofitting of shear failed reinforced concrete beams

This paper considers the strength and load carrying capacity enhancement of reinforced concrete beams that have been tested and failed in shear. A total of sixteen sheared beam specimens with a length of 1.2 m and cross-sectional area of 100 by 150 mm were retrofitted by using various types of fibre reinforced polymer (FRP) and then retested. The retrofitted beam specimens wrapped with different amounts and types of FRP were subjected to four-point static loading. Load, deflection and strain data were collected during testing the beam specimens to failure. Results of the experimental program indicate that there are several parameters that affect the strength of the beams. The results also show that the use of FRP composites for shear strengthening provides significant static capacity increase.