Structural Fiber Reinforcement to Reduce Deck Reinforcement and Improve Long-Term Performance

The use of deicing salts on highway bridges has decreased the service life of bridge decks due to the accelerated corrosion of the steel reinforcement. The use of Glass Fiber Reinforced Polymer (GFRP) in bridge decks as a means of corrosion-mitigation has been met with some success; however, GFRP is a linear-elastic material that does not exhibit any plastic behavior prior to rupture. This current work provides a description of an experiment conducted on 14 full-scale 4’x12’ flexural bridge deck specimens and six full-scale 14’x12’ punching shear specimens. The decks contained steel-reinforcement, GFRP-reinforcement, or discrete GFRP-reinforcement combined with alkali-resistant fiberglass composite macrofibers. The investigation consisted of two parts: the static testing and the cyclic and post-cyclic testing. The cyclic specimens experienced either 1 or 2 million cycles at the service level. The hybrid reinforced concrete (HRC) decks exhibited more flexural ductility prior to the rupture of the concrete than both the steel- and GFRP-reinforced deck panels. Under fatigue loading, all of the decks performed within the American Association of State Highway and Transportation Officials (AASHTO) criteria for service level crack width and deflections. Therefore, based on the results, the HRC reinforcement strategy is viable for both ultimate and service limit states.


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 220p

Subject/Index Terms

Filing Info

  • Accession Number: 01744503
  • Record Type: Publication
  • Report/Paper Numbers: MPC-20-413
  • Contract Numbers: MPC-581
  • Created Date: Jun 30 2020 5:40PM