Effective Structural Concrete Repair, Volume 1 of 3, Repair of Impact Damaged Prestressed Concrete Beams with CFRP, March 2004

Structural concrete is one of the most commonly used construction materials in the United States. However, due to changes in design specifications, aging, vehicle impact, etc. – there is a need for new procedures for repairing concrete (reinforced or pretressed) superstructures and substructures. Thus, the overall objective of this investigation was to develop innovative cost effective repair methods for various concrete elements. In consultation with the project advisory committee, it was decided to evaluate the following three repair methods: • Carbon fiber reinforced polymers (CFRPs) for use in repairing damaged prestressed concrete bridges • Fiber reinforced polymers (FRPs) for preventing chloride penetration of bridge columns • Various patch materials The initial results of these evaluations are presented in this three volume final report. Each evaluation is briefly described in the following paragraphs. A more detailed abstract of each evaluation accompanies the volume on that particular investigation.

Executive Order Number Ten, September 1999

Executive order signed by Governor Thomas Vilsck

Executive Order Number One, January 1999

Excecutive order signed by Governor Thomas Vilsck

Executive Order Number Two, February 1999

Executive order signed by Governor Thomas Vilsck

Executive Order Number Three, February 1999

Executive order signed by Governor Thomas Vilsck

Executive Order Number Four, February 1999

Executive order signed by Governor Thomas Vilsck

Executive Order Number Five, March 1999

Executive order signed by Governor Thomas Vilsck

Executive Order Number Six, April 1999

Executive order signed by Governor Thomas Vilsck

Executive Order Number Seven, September 1999

Executive order signed by Governor Thomas Vilsck

Executive Order Number Eight, September 1999

Executive order signed by Governor Thomas Vilsck

Executive Order Number Nine, September 1999

Executive order signed by Governor Thomas Vilsck

Executive Order Number Thirty-Four, December 2003

Executive order signed by Governor Thomas Vilsck

Executive Order Number Eleven, September 1999

Executive order signed by Governor Thomas Vilsck

Executive Order Number Twelve, September 1999

Executive order signed by Governor Thomas Vilsck

Executive Order Number Thirteen, December 1999

Executive order signed by Governor Thomas Vilsck