Evaluation of Warm Mix Asphalt Binder Rheology and Longitudinal Joint Performance: A British Columbia Study

Warm Mix Asphalt (WMA) has gained much attention from pavement engineers and the paving industry due to lower energy consumption during production and lower air emissions during placement. It is not only beneficial to the environment but also extends the paving season in cold climate regions like Canada. The British Columbia Ministry of Transportation and Infrastructure (MoTI) began evaluating WMA technology in their road infrastructure rehabilitation program in 2009. Three different WMA technologies have been evaluated. Foamed Asphalt, Sasobit and Evotherm were used to pave test sections on Highways 1, 3A, and 99 within the southern portion of the Province. For each of these projects, adjacent sections were paved with Hot Mix Asphalt (HMA) for control. In this study, laboratory testing was carried out to evaluate the binder rheology of the different WMA technologies that were used to pave BC MOTI test sections and the results were compared to the binder of the control sections. In addition, a visual pavement condition survey was conducted for each of the three test sections and compared to the control HMA sections. Furthermore, longitudinal joint compaction performance was evaluated by density testing on core samples. (A)


  • English

Media Info

  • Pagination: p. 431-51
  • Monograph Title: Proceedings of the Fifty-Seventh Annual Conference of the Canadian Technical Asphalt Association: Vancouver, British Columbia November 2012

Subject/Index Terms

Filing Info

  • Accession Number: 01494245
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada (TAC)
  • Files: ITRD, TAC
  • Created Date: Sep 24 2013 12:57PM