Synthesis Study: Repair and Durability of Fire-Damaged Prestressed Concrete Bridge Girders

US Transportation Collection2022PDFTech ReportTseng, Tzu-ChunVarma, Amit H.Purdue University. Joint Transportation Research ProgramIndiana Department of TransportationUnited States. Department of Transportation. Federal Highway AdministrationPurdue University. Joint Transportation Research ProgramUnited StatesDurabilityFiresGirdersPrestressed concrete bridgesRepairingRetrofittingStructural analysisFHWA/IN/JTRP-2022/15SPR-4532Final ReportRecent research results from INDOT research project SPR-4221 indicate that the damage to prestressed concrete bridge girders from an intense hydrocarbon fire is limited to concrete material degradation up to a depth of 1 inch from the surface. Additionally, concrete cracking and spalling occur in the fire-damaged region, but the structural strength (flexure and shear) of fire-exposed ed. The findings open the possibility for repairing damaged bridge girders and answers questions regarding the durability of damaged-unrepaired and damaged-repaired girders.143