Fatigue Strength of CFRP-repaired Reinforced Concrete Bridge Girders under Service Temperature

Fatigue cracking is known to be a common problem in steel and concrete bridge girders due to the frequent passage of axle loads. In reinforced concrete bridges, elements such as slabs, girders, and piers, are subjected to a high number of stress cycles that can lead to the development of cracking in the concrete or the reinforcing steel. Fatigue crack development in the reinforcement is a frequent issue, which have been previously studied by various researchers. One promising solution for mitigating such cracks is the use of carbon fiber reinforced polymer (CFRP) patches or plates for the repair of the cracked elements. The application of CFRP patches result in an overall increase in member stiffness and strength, thereby reducing the stress range applied and slowing down or arresting crack propagation.

Language

  • English

Project

  • Status: Completed
  • Funding: $130000
  • Contract Numbers:

    DTRT12-G-UTC08

  • Sponsor Organizations:

    Research and Innovative Technology Administration

    Office of Research, Development, and Technology
    1200 New Jersey Avenue, SE
    Washington, DC    20590
  • Managing Organizations:

    Mountain-Plains Consortium

    North Dakota State University
    P.O. Box 6050, Department 2880
    Fargo, ND  United States  58108-6050
  • Project Managers:

    Kline, Robin

  • Performing Organizations:

    Dept. of Civil and Environmental Engineering

    Colorado State University
    Fort Collins, CO  United States 
  • Principal Investigators:

    Mahmoud, Hussam

  • Start Date: 20130101
  • Expected Completion Date: 20160630
  • Actual Completion Date: 20180827
  • USDOT Program: University Transportation Centers Program
  • Source Data: MPC-412

Subject/Index Terms

Filing Info

  • Accession Number: 01484102
  • Record Type: Research project
  • Source Agency: Mountain-Plains Consortium
  • Contract Numbers: DTRT12-G-UTC08
  • Files: UTC, RiP
  • Created Date: Jun 18 2013 1:00AM