Performance of Virginia's warm-mix asphalt trial section

Three trial sections using two warm-mix asphalt (WMA) technologies were constructed in various locations in Virginia in 2006, and experiences with these trial sections were used in the development of the Virginia Department of Transportation's special provision to allow the use of WMA. WMA for two of the sections was produced using Sasobit, an organic additive (developed by Sasol Wax), and WMA for the third section was produced using Evotherm ET (developed by MeadWestvaco Asphalt Innovations) as the modification method. The sections were evaluated over a 2-year period to assess the initial performance of the WMA and compare it with that of hot-mix asphalt (HMA) control sections constructed at the same time. Coring and visual inspections were performed during the initial construction and at intervals of 3 months, 6 months, 1 year, and 2 years. The cores were tested to determine air-void contents and permeability prior to undergoing extraction and recovery of the asphalt binder for performance grading. In addition, for the two Sasobit trial sites, historic data, core data, and ground-penetrating radar scans were collected and compared to provide documentation of the pavement structure for future analysis.

Language

  • English

Media Info

  • Pagination: 41p
  • Serial:
    • Issue Number: VTRC 10-R17

Subject/Index Terms

Filing Info

  • Accession Number: 01382129
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI, STATEDOT
  • Created Date: Aug 22 2012 1:03PM