City of Winnipeg's Experience with Recycled Asphalt Shingles (RAS) in Hot Mix Asphalt (HMA)

The use of Recycled Asphalt Shingles (RAS) in Hot Mix Asphalt (HMA) has gained popularity in Canada because of its potential economic and environmental benefits. The City of Winnipeg Public Works Department initiated a study in 2013 with the University of Manitoba to evaluate the field performance of RAS in HMA overlays of concrete pavement in the City. Fifteen (15) field trials using 3 percent RAS in 50mm HMA overlays were built between 2010 and 2013 and were selected for field evaluation. The City of Winnipeg's Type-1A (Control) mix was placed alongside the RAS mix at eleven of the fifteen locations as a control for the field comparison. Post-overlay distress surveys were conducted in 2013 to evaluate and compare the field performance of the RAS and Control overlays. In addition, the asphalt binders were extracted from the RAS and Control mixes and graded using the Superpave performance binder tests. This paper presents the findings of the field evaluation and comparison of the RAS and Control overlay performance. The results will assist in the development of guidelines and recommendations for the future use of RAS in HMA overlays in the City of Winnipeg.

• Corporate Authors:

  Canadian Technical Asphalt Association

  ,   United States 
• Authors:
  • KAVANAGH, L
  • ESFANDIARPOUR, S
  • Shalaby, A
  • Camargo, P
• Conference:
  • Proceedings of the Fifty-Ninth Annual Conference of the Canadian Technical Asphalt Association (CTAA): Winnipeg, Manitoba
• Publication Date: 2014

Language

• English

Media Info

• Media Type: Print
• Pagination: pp. 323-343.
• Monograph Title: Proceedings of the Fifty-Ninth Annual Conference of the Canadian Technical Asphalt Association (CTAA): Winnipeg, Manitoba

Subject/Index Terms

• TRT Terms: Bituminous materials; Bituminous mixtures; Conferences; Evaluation; Field tests; Hot coated materials; Mix design; Structural strengthening; Tests
• Geographic Terms: Canada
• ITRD Terms: 4955: Bituminous materials; 4967: Bituminous mixture; 8018: Canada; 8525: Conference; 9020: Evaluation (assessment); 4997: Hot coated material; 6226: In situ; 4714: Mix design; 3096: Strengthening (pavement); 6255: Test
• Subject Areas: Data and Information Technology; Maintenance and Preservation; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01591552
• Record Type: Publication
• Source Agency: Transportation Association of Canada (TAC)
• Files: ITRD, TAC
• Created Date: Feb 26 2016 10:41AM