An evaluation of concrete patching in continuously reinforced concrete pavements (CRCP) located in Illinois was made. Problems in designing and constructing permanent concrete patches were identified; the costs of patching were estimated; and the performance of typical patches was evaluated. Illinois has constructed over 4827 two-lane Km (3000 miles) of CRCP, major portions of which are displaying increasing occurrence of distress that requires patching. Patches placed in recent years are performing inadequately. A survey of over 800 CRCP patches showed one-fourth requiring replacement and one-fifth requiring an adjoining patch. Constructing a typical 3x3.7-m (10x12-ft) patch is labor intensive, time consuming, and expensive. Between six and eight people can only place a patch a day at a cost of $1000-1600. The poor performance of many patches can be attributed to inadequate design specifications and poor construction techniques. The information in this paper can be used to improve the design specifications and construction techniques for CRCP patching. Many experimental patches have been placed and are being evaluated. (Author)

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 9-17
  • Monograph Title: Maintenance, Economics, Management, and Pavements
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00310741
  • Record Type: Publication
  • ISBN: 0309029805
  • Files: TRIS, TRB
  • Created Date: Aug 5 1980 12:00AM