Performance Evaluation of Hot Mix Asphalt Containing Recycled Asphalt Shingles in Washington State

Due to the increasing cost of asphalt binder and also due to environmental considerations, recycled asphalt shingles (RAS) are now being allowed to be added into hot mix asphalt (HMA). Recycled asphalt shingles (RAS) have been incorporated into hot mix asphalt (HMA) with the intent to achieve the potential benefits of cost-effectiveness and environmental sustainability without compromising the performance of the HMA. This study investigates the performance of HMA with and without RAS based on the evaluation of field cores drilled from four experimental pavement sections that were constructed in 2009 in King County of Washington State. The performance of the asphalt mixtures and the recovered asphalt binders are evaluated with respect to rutting, fatigue and thermal cracking resistance via laboratory experiments. The test results show that the rutting resistance of the mixtures as well as the recovered binders is improved by the addition of RAS. However, the fatigue and thermal cracking resistance of the mixtures is not significantly affected by the addition of RAS. The field performance survey indicates excellent conditions for all test sections after three years of service.

• Supplemental Notes:
  • This paper was sponsored by TRB committee AFK30 Characteristics of Nonasphalt Components of Asphalt Paving Mixtures.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Wu, Shenghua
  • Zhang, Kun
  • Wen, Haifang
  • DeVol, Joe
  • Kelsey, Kevin
• Conference:
  • Transportation Research Board 93rd Annual Meeting
  • Location: Washington DC
  • Date: 2014-1-12 to 2014-1-16
• Date: 2014

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Maps; References; Tables;
• Pagination: 19p
• Monograph Title: TRB 93rd Annual Meeting Compendium of Papers

Subject/Index Terms

• TRT Terms: Binders; Cost effectiveness; Fatigue (Mechanics); Field tests; Hot mix asphalt; Performance evaluations; Recycled materials; Rutting; Shingles
• Geographic Terms: King County (Washington)
• Subject Areas: Highways; Pavements; I30: Materials; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 01519133
• Record Type: Publication
• Report/Paper Numbers: 14-3994
• Files: TRIS, TRB, ATRI
• Created Date: Mar 24 2014 12:01PM