Abstract: RCC structural members are retrofitted to restore the strength of aged structural concrete elements and prevent additional concrete distress. During their service lives beams can deteriorate due to poor construction, environmental influences, causing a reduction in the beam’s strength. As a result, strengthening the weakened Beam is essential for its proper performance, and GFRP wrapping has been demonstrated to provide acceptable strengthening in prior studies. In this study, experiment is carried out on M25 grade concrete beams. Total 6 beams were casted of Standard size (200mm x 250mm) and 2.3 m in length in two groups which were Group A and Group B. In both the groups A and B there were 3 beams in each group. In group A, beams were casted flexure weak intentionally out of which 1 was control specimens and 2 beams of M25 concrete were wrapped with GFRP. Similarly In group B, beams were casted shear weak intentionally out of which 1 was control specimens and 2 beams of M25 concrete were wrapped with GFRP. Flexural and shear testing of beams was done on Universal Testing Machine (UTM) after 28 days of curing. At the time of Casting of beams the 6 no of cubes of M 25 Grade of standard size (150mm x 150mm x 150mm) were casted and tested under Compressive Strength Testing Machine after 7 days and 28 days of curing period. After testing of cubes, the results were extracted for Compressive Strength of cubes of 7 and 28 days and plotted on graph. After testing of both groups beams the results were extracted like deflection, failure modes, ultimate load carrying capacity and Compressive Strength and results were tabulated and plotted on graph. According to the results obtained conclusion was concluded.
Keyword: Glass fiber reinforced polymer (GFRP) sheets, Shear Strength, Flexural Strength, Strengthening.

| DOI: 10.17148/IARJSET.2022.9640