Choosing Micromilling over Paver-Placed Surface Treatment: Transverse Joint Repair Job Employs Emerging Technologies

This article reports on a resurfacing project on Interstate Route 81 in central New York in which the prime contractor submitted a Value Engineering Change Proposal to the New York State Department of Transportation (DOT) to incorporate an alternative method for the project. The original project included 7.6 miles of transverse joint repair followed by an entire resurfacing using a paver-placed surface treatment. This section of the highway was a composite pavement consisting of approximately 4 inches of hot mix asphalt (HMA) placed over a 9-inch think PCC layer. The contractor proposed replacing the paver-placed surface treatment with a micromilling process complete with a thin lift HMA overlay. This process was then completed with a Roadtec RX-70 full lane machine with a 4-wrap drum in downcut mode. The thin lift overlap was a 6.3mm HMA mixture using a PG64-22P polymer modified binder. The author concludes with brief remarks comparing this new alternative to a section of highway completed with the originally-proposed repair technique.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Photos;
  • Pagination: pp 22-26
  • Serial:
    • Asphalt
    • Volume: 28
    • Issue Number: 1
    • Publisher: Asphalt Institute
    • ISSN: 0004-4954

Subject/Index Terms

Filing Info

  • Accession Number: 01531723
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 4 2014 11:29AM