A method has been developed to strengthen existing deteriorating bridge slabs from underneath, thus eliminating disruption of traffic. A small portion of two structures near downtown Houston, Texas, was strengthened using this method. The effectiveness of this strengthening was evaluated by means of field measurements of deflection and strain under static wheel loading before and after strengthening. The strengthening system was erected under traffic conditions with little difficulty. It reduced slab deflections and stresses by more than 50% and provided a significant increase in ultimate strnegth. The strengthening system has not healed the existing slab cracking and some type of surface sealing will be required to prevent further surface decomposition by exposure to contaminants.

  • Corporate Authors:

    Texas State Department of Highways & Public Transp

    P.O. Box 5051
    Austin, TX  United States  78763
  • Authors:
    • Butler, H D
    • Furr, H L
    • Suchicki, E J
  • Publication Date: 1976-8

Media Info

  • Features: Appendices; Figures; Photos; Tables;
  • Pagination: 73 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00139707
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DAT-1-5-75-219-1F Final Rpt.
  • Contract Numbers: 1-5-75-219
  • Created Date: Oct 6 1976 12:00AM