Abstract
In November 1999, bonded fiber-reinforced polymer (FRP) laminates were used to strengthen a single span, reinforced concrete T-beam bridge in New York State. The laminate system was installed to strengthen the structure in flexure and shear, and to contain observed freeze–thaw cracking. The bridge was then instrumented and load tested before and after installation of the laminates, to evaluate effectiveness of the strengthening FRP system. In November 2001, the load test was repeated to monitor in-service performance of the system. The test results indicated that the quality of bond between the laminates and concrete, and effectiveness of the system have not deteriorated after two years of service. Further inspection using an Infrared thermography camera did not show any significant delamination in the system, in agreement with the test results.
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