Optimizing Use of Reclaimed Asphalt Pavement in Flexible Pavements in Ontario

In the Ministry's quest toward a more environmentally sustainable construction program, our recycling policies specifying when and how much Reclaimed Asphalt Pavement (RAP) is permitted in Hot Mix Asphalt (HMA) required review. The review came on the heels of the successful completion of a demonstration contract constructed in 1999 utilizing hot in-place recycling and Recycled Hot Mix (RHM). The demonstration showed that premium surface courses required for freeways could perform equally well with RAP in the HMA. To assist in revisiting our policy, a survey of other state agencies' recycling policies was conducted in 2008. Based on our findings, the Ministry is confident that the paving industry can produce HMA with higher percentages of RAP and has taken steps to permit HMA mix designers to make that choice. This also includes allowing RAP in mixes where we have traditionally not permitted any RAP, such as premium surface courses. Details of the Ministry's innovative pavement recycling program, which aims at providing a sustainable rehabilitation option that is safe, efficient, environmentally friendly, cost-effective, and that meets the needs of present-day users without compromising those of future generations, are summarized in this paper along with the results of our environmental scan.

Language

  • English

Media Info

  • Pagination: p. 233-246

Subject/Index Terms

Filing Info

  • Accession Number: 01149410
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada (TAC)
  • Files: TAC
  • Created Date: Jan 28 2010 7:32AM