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Rapid Retrofit And Strengthening Of Bridge Components, Abheetha Peiris, Issam E. Harik
Rapid Retrofit And Strengthening Of Bridge Components, Abheetha Peiris, Issam E. Harik
Kentucky Transportation Center Research Report
Rapid repair of damaged or deteriorated concrete bridge components will prevent the entire bridge from suffering irreversible damage in the future due to gradual spalling of concrete or corrosion of exposed steel. CFRP laminates and fabrics have become popular for repairing and strengthening of concrete girders. A series of CFRP materials — branded CatStrong — specifically designed for the repair and retrofit of bridges was developed at the Kentucky Transportation Center and the University of Kentucky. These materials include the CFRP Rod Panels (CatStrong CRPs), Unidirectional and Triaxial Carbon Fabric (CatStrong UCF and TCF), and Triaxial Carbon Wrap (CatStrong TCW). …
Rapid Repair Of Bridge Decks In Cold Weather, Abheetha Peiris, Issam E. Harik
Rapid Repair Of Bridge Decks In Cold Weather, Abheetha Peiris, Issam E. Harik
Kentucky Transportation Center Research Report
Using regular concrete or mortar to repair potholes in concrete bridge decks is typically infeasible in cold weather due to extended set and curing times. However, several commercially available rapid-set repair materials can be used at temperatures near or below freezing. This study evaluated five such materials to assess their properties and determine which are most suited to executing pothole repairs in cold weather. For each material, laboratory testing evaluated set times, compressive strength gains, and bond strength to existing concrete at three temperatures: 35°F, 15°F, and 0°F (1.7°C, -9.4°C, and -17.8°C, respectively). Testing identified Phoscrete as the repair material …