Tseng, T.-C., & Varma, A. H. (2022). Synthesis study: Repair and durability of fire-damaged prestressed concrete bridge girders (Joint Transportation Research Program Publication No. FHWA/IN/JTRP-2022/15). West Lafayette, IN: Purdue University. https://doi.org/10.5703/1288284317378
Recent 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 prestressed concrete bridge girders is not compromised. The findings open the possibility for repairing damaged bridge girders and answers questions regarding the durability of damaged-unrepaired and damaged-repaired girders.
fire, prestressed, concrete, girder, bridge, repair, durability
Joint Transportation Research Program
Indiana Department of Transportation
West Lafayette, IN
Date of this Version