Project Details

This report is an extension to the final report for NCDOT project 2004-15 ""Value Engineering and Cost-Effectiveness of Various Fiber Reinforced Polymers (FRP) Repair Systems"", submitted in June 2005. In that report, seventeen 30-ft long prestressed concrete c-channels were tested under static and fatigue loading conditions using various carbon fiber reinforced polymer (CFRP) strengthening systems to determine their structural behavior, cost effectiveness and constructability. The 2004-15 final report also included the behavior of impact damaged AASHTO girders repaired by CFRP systems and tested under fatigue loading conditions.​

This final report for NCDOT project 2006-10, summarizing the results of Phase II of the NCDOT project 2004-15, includesthe behavior of four additional c-channel prestressed concrete girders strengthened with externally bonded high modulus CFRP sheets and high strength steel reinforced polymer (SRP) wire mesh. The report includes also the behavior of four additional AASHTO type II girders. Two long-span AASHTO girders were tested static loading conditions to assess the performances of FRP systems designed to repair impact damage. Two AASHTO girders were tested using short spans to determine the effectiveness of using FRP to restore the shear capacity of impact damaged girders with one girder tested as control specimen and one damaged then repaired with FRP. The repaired girder was stronger than the damaged girder, indicating that the FRP repair is effective in restoring the girder shear capacity.