INVESTIGATION OF RC RETROFITTED WITH ULT STRENGTH CEMENTITIOU BEAMS RA HIGH S COMPOSITE OVERLAY

Studies have been carried out on flexural behavior of Reinforced Concrete beam retrofitted with Ultra High Strength Cementitious Composite (UHSCC) overlay. dimensions of the Reinforced Concrete beam is kept as 1500 x 100 x 200mm. A Reinforced Concrete beam used for the study is considered control beam has been tested up to failure under four to 70% of the ultimate load and one RC beam has been preloaded up to 65% of ultimate load of control beam. The st carried out using UHSCC overlay, attached beneath the tension face of the preloaded beam. For 70% preloaded RC beam, the overlay is provided throughout the span of the beam whereas for the other 70% preloaded RC beam, the overlay is provided only at the bending moment zone. During testing, the parameters such as load, deflection, cracks, failure pattern has been monitored. numerical investigation has been carried out to validate t is done using FEA software ABAQUS. The cracks are modeled to show the preloaded effect for UHSCC strengthened RC beams and subsequently loaded as in real time, to estimate the increase in flexural experimental investigation and finite element analysis showed that the load carrying capacity and ductility are improved in the case of beams with UHSCC overlay when compared to conventional Reinforced Concrete beams thus finding its the retrofitting procedures. -point bending. Two RC beams have been preloaded up rengthening of preloaded RC beams have been beam and the 65% preloaded RC he experimental results. This strength of the beam. The results obtained from the The The application in