BACKER ROD INSTALLATION

One of the major differences between repairing cracks in asphalt pavement and resealing joints in concrete pavements is the use of backer rod in concrete pavement joints. Research conducted under the Strategic Highway Research Program (SHRP) and published last year found that studies indicated backer rod should be a required component in all joint resealing operations. The reasons are twofold. First, backer rod helps keep the sealant to its designed thickness. When installed properly, backer rod sits in the prepared joint, enabling workers to place the proper amount of joint sealing material. SHRP research has found that sealant that is too thick increases the stress on the sealant, making it more likely the joint seal will fail prematurely. Second, backer rod prevents the sealant from bonding to the bottom of the joint reservoir.

  • Availability:
  • Corporate Authors:

    Johnson Hill Press

    1233 Janesville Avenue, P.O. Box 803
    Fort Atkinson, WI  United States  53538-0803
  • Authors:
    • Heydorn, A
  • Publication Date: 1996-1

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00715496
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 25 1996 12:00AM