EXPERIMENTAL WITH FINITE ELEMENT ANALYSIS OF REINFORCED CONFINED CONCRETE WITH GFRP LAMINATES

Over the past two years, the usage of innovative composite materials like FRP (Fiber Rein- forced Polymers) in improving RC (reinforced concrete) structural components were improv- ing. Study and planning standards came to the conclusion that the capabilities of RC compo- nents were increased by an externally bonded FRP. Usage of hybrid FRP sheets, which is com- prised of a mixture of either glass and carbon fibers, or aramid and glass fibers, alters the per- formance of the substance to non-linear behavioural patterns. Though, the linear stress–strain qualities of FRP up to the inability and the absence of yield plateau have an adverse effect on the total ductility of the reinforced RC components This article introduces an experimental program performed to examine the performance of RC beams reinforced with HFRP (hybrid fiber reinforced polymer) sheets. This article seeks to examine the performance of RC beams reinforced by hybrid FRP sheets. In this study, twelve sets of beams are considered, out of which, four specimens consists of two control specimens with shear reinforcement of 100mm and 200mm spacing. Remaining eight specimens are consists of normal stirrups and cellular stirrups are provided around the beam with 100mm & 200 mm spacing, reinforced with 3mm & 5mm GFRP layer as a shear reinforcement in the RCC specimen. The study also involves the behaviour of shear having several GFRP layers of first crack load, yield load, ultimate loadcarrying capacity, deflection ductility and deflection ratio of the beam are also investigated both experimental & analytical. The results concluded that the retrofitted specimens have more load carrying capacity compared to control specimens. Thus, the retrofitting is a feasible solution to overcome the stresses developed in the structure. An investigative model dependent upon the stress–strain qualities of FRP, steel and concrete has been implemented. Proposals and design standards of RC beams reinforced by GFRP and FRP sheets have been presented. In this study, the experimental findings have been contrasted with FEM based models results of varying internal confinement with GFRP.