Damage Detection and Repair Methods for GFRP Bridge Decks: [Summary]
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2011-01-01
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TRIS Online Accession Number:01367406
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Edition:Final Report March 2009-November 2011
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NTL Classification:NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures;NTL-HIGHWAY/ROAD TRANSPORTATION-Materials;
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Abstract:Glass fiber-reinforced polymer (GFRP) decks offer advantages as replacements for worn steel bridge decks because of their high strength-to-weight ratio and fast installation time. However, before GFRP decks can be put into service, methods to reliably evaluate their durability and field performance must be developed. These methods can assure the suitability of GFRP decks as replacements for steel decks and serve in the field monitoring and maintenance of the decks. In this project, researchers from the University of Florida investigated nondestructive methods to inspect GFRP decks, specifically acoustic emission (AE) and infrared thermography (IRT). AE is used extensively in the inspection of pressure tanks and vessels. IRT is a relatively well-established tool with existing ASTM standards for detecting delaminations in reinforced concrete bridge decks and detecting defects in fiber-reinforced polymer composites used in aerospace structures.
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