Application of Tensioned CFRP Strip Method to an Existing Bridge

Abstract

Synopsis: Tensioned carbon fiber reinforced polymer (CFRP) strip method or Outplatemethod was applied to the 28 years old reinforced concrete (RC) box girder bridge in order to rehabilitate and increase the load capacity of the bridge. The Chofu Bridge had been deteriorated by 28 years of heavy traffic and had many cracks on the underside of the main girders. Before and after the CFRP application, on-site load tests of the bridge were conducted using a 45 ton-weight vehicle. Results of the tensioned CFRP strip application to the bridge girders proved effective to reduce the stress in the reinforcing bars and to reduce crack widths.