Research sponsored by the Illinois Department of Transportation with coopertion from the Federal Highway Administration and conducted by the University of Illinois has improved patching procedures for continuously reinforced concrete pavements. Two distinct patching techniques were developed. The first technique incorporated a shorter-tied overlap of existing steel and new steel and provided a shorter working area in the center of the patch. The second technique shortened the overlap of steel even further by welding the existing steel to the new steel and using a tied-lap splice in the center of the patch to avoid potential buckling of the reinforcement. Tests indicated that mechanically coupling the new reinforcement to the exposed reinforcement at the ends of the patch is a satisfactory alternative to tying the rebars. The application of these techniques and the benefits derived are described. In 1984, 1,730 patches were placed using the new techniques and the total cost savings realized was $865,000. It is expected that comparable savings were realized in 1985 and will be realized each year thereafter.

Media Info

  • Features: Figures;
  • Pagination: p. 8-9
  • Serial:
    • TR News
    • Issue Number: 124
    • Publisher: Transportation Research Board
    • ISSN: 0738-6826
  • Publication flags:

    Open Access (libre)

Subject/Index Terms

Filing Info

  • Accession Number: 00457009
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 27 2004 10:01PM