ABSTRACT
Abstract An overview of implemented repair, strengthening and retrofit techniques for existing concrete bridges and buildings in California is provided, documented by field applications and the supporting full or large scale experimental verification of the expected limit state behavior. Bridge repair measures discussed include deck overlays and epoxy injection: bridge strengthening measures for non-seismic loads focus on external posttensioning and the addition of high-strength concrete soffit slab panels; and, finally, seismic retrofitting measures ranging from complete component replacement to steel and polymer matrix composite jacketing of existing bridge bents. For the repair and seismic retrofit of buildings, the applications of advanced composite wall overlays are investigated. The effectiveness of these rehabilitation measures can only be ensured by destructive field tests or full-scale experimental laboratory simulations in conjunction with analytical behavior models which can describe the full nonlinear load-deformation characteristics. The presented rehabilitation measures are discussed with respect to their effectiveness, hmitations and design implications. Keywords: Strengthening, retrofit, repair, concrete, seismic, bridges, buildings, composite overlays, polymer matrix composites.
