Indonesia Conference Directory

Glass Fiber Reinforced Polymer (GFRP) is a composite material that is lightweight, easy to apply, low-cost installation and maintenance, thus becoming material selection for retrofitting reinforced concrete (RC) structure. This study aims to analyze the shear capacity of reinforced concrete beams after initial cracked, which is retrofit with GFRP sheets in the pedestal shear area. Six RC beams with dimensions of 15 cm x 35 cm x 300 cm were tested with a monotonic load, consisting of 2 normal beam (BN), 2 RC beams retrofitting with GFRP strips (BGS) and 2 RC beams strengthened in all the shear zones with GFRP (BGF). The results showed that an increase in ultimate load on the beams retrofit with GFRP, ie 3.13% of BGS and 6.25% in the BGF. Retrofitting with GFRP sheet on RC beam shear area is strongly influenced by the extent of GFRP sheets used (Afv). The change in the area of GFRP from BGS with Afv = 780 mm to BGF with Afv = 1105 mm, is able to increase the beam shear capacity by 10.63%. From the calculation, the beam shear capacity increased by 58% in BGS and 74.5% in BGF beams.