Design and Construction Guidelines for Strengthening Bridges using Fiber Reinforced Polymers (FRP)

This research concerns the development of guidelines for the design and use of externally-bonded Fiber Reinforced Polymers (FRP) strengthening systems on bridges in Michigan. Six representative international FRP-related guidelines were analyzed and compared for applicability and effectiveness to Michigan Department of Transportation (MDOT) needs. An experimental program involving natural and accelerated laboratory weathering was conducted to determine acceleration factors appropriate for the climate of Michigan. Bond pull-off and other specimen tests were used to establish rates of strength degradation, and an environmental reduction factor was estimated from these results. From the review of the existing guidelines as well as the test results, recommendations for design as well as installation, quality control, inspection, maintenance and repair were proposed that are based on modifications to as well as a synthesis of existing provisions.

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