Existing reinforced-concrete (RC) structures may require strengthening to limit earthquake damage. Jacketing by steel plates, by fibre-reinforced-concrete, and by ordinary RC are common ways of strengthening structural members. In this study, flexural behaviours of RC beams and those of the same beams having been jacketed by RC after the former were loaded to full plastic yield under bending are experimentally determined, both being under-rei it forced. It is noted that the mechanical behaviours of the jacketed RC beams are similar to and slightly better than those ordinary RC beams of the same dimensions, despite the fact that the core parts of the jacketed RC beams were in a yielded state. (C) 2004 Elsevier Ltd. All rights reserved.
Abstract
Existing reinforced-concrete (RC) structures may require strengthening to limit earthquake damage. Jacketing by steel plates, by
fibre-reinforced-concrete, and by ordinary RC are common ways of strengthening structural members. In this study, flexural behaviours
of RC beams and those of the same beams having been jacketed by RC after the former were loaded to full plastic yield
under bending are experimentally determined, both being under-reinforced. It is noted that the mechanical behaviours of the
jacketed RC beams are similar to and slightly better than those ordinary RC beams of the same dimensions, despite the fact that the
core parts of the jacketed RC beams were in a yielded state.
