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Seismic Rehabilitation of RC Exterior Beam-Column Connections Using Epoxy Resin Injection

The efficacy of a technique for the rehabilitation of RC beam-column connections damaged due to cyclic loading was investigated. The repair mainly uses epoxy resin infused under pressure into the damaged region. Three common types of RC exterior beam-column connections under two different cyclic loadings were considered for the experimental investigation. The rehabilitated specimens were also subjected to similar cyclic displacement. Important parameters related to seismic capacity such as strength, stiffness degradation, energy dissipation, and ductility were evaluated. The rehabilitated connections exhibited equal or marginally better performance and hence the adopted rehabilitation strategies could be considered as satisfactory.