Research on Seismic Retrofit and Rehabilitation of Reinforced Concrete Shear Walls Using FRP Materials
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This paper presents the results of an experimental study on the effectiveness of using externally bonded carbon fibre sheets as a retrofit and repair method for concrete shear walls. The experimental testing program, which has been carried out in two phases, is presented. The observed behaviours of the shear wall specimens are discussed. The test specimens include control walls, repaired walls, and strengthened walls. In the first phase, torsional behaviour of the walls is found to have significant influences on the wall performance. These observations from the first phase of the study have been used to improve the instrumentation and test set-up in the second phase. The study shows that the repair and retrofit method using carbon fibre sheets is effective in recovering the initial elastic stiffness of previously damaged wall specimens and in increasing the yield load and ultimate load carrying capacities of both repaired and retrofitted wall specimens.
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