Repair and Strengthening of Impacted PC Girders on Bridge A4845 Jackson County,Missouri

摘要

This project consisted of the repair and strengthening of 11 PC girders that weredamaged by vehicular impact on Bridge A4845, Jackson, MO. The repair/strengthening was achieved by externally bonded FRP reinforcement. Co-Force America, Inc. carried out the design for the repair/strengthening of the girders and provided quality control in the initial stages of the construction. Additional strips of FRP were installed by the University of Missouri-Rolla for long-term bond durability studies in the form of bond pull-off and torsion tests. The initial tests have shown good adhesion of the laminate to the concrete substrate. Follow up tests will be performed at one-year intervals for the next 5 years. A separate report will be submitted by UMR once all of the bond durability tests are completed.