Reclaimed Asphalt Shingles Characterization: Best Practices

The competitive environment contractors are facing has encouraged the asphalt pavement industry to consider using recycled products such as reclaimed asphalt pavement (RAP), ground tire rubber (GTR), and reclaimed asphalt shingles (RAS) in their mixtures. While products like GTR serve as an asphalt modifier easing the industry’s dependence on the supply of polymers such as styrene-butadiene-styrene (SBS), RAS and RAP allow contractors to replace both aggregate and asphalt in mixtures with materials previously produced and/or used for another purpose. Additionally, as environmental standards have evolved forcing disposal sites to limit the dumping of this material, more than 11,000 disposal sites for RAS closed between 1980 and 1997 causing tipping fees to escalate to near $100 per ton. The nearly 11 million tons of waste shingles produced each year results in approximately 22 million cubic yards of waste material which will need to be landfilled. This, in turn, is approximately eight to ten percent of the annual building-related waste and construction debris, respectively, annually produced in the US. Thus, using RAS in asphalt mixtures, in effect, reduces both the fiscal and environmental costs of the asphalt mixtures being produced.

• Record URL:
  • http://www.ncat.us/files/reports/2013/rep13-07.pdf
• 
• Corporate Authors:

  National Center for Asphalt Technology

  Auburn University, 277 Technology Parkway
  Auburn, AL  United States  36830
• Authors:
  • Willis, J Richard
• Publication Date: 2013-5

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: 38p

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Best practices; Costs; Crumb rubber; Environmental protection; Mix design; Recycled materials; Shingles
• Uncontrolled Terms: Ground tires
• Subject Areas: Design; Environment; Highways; Pavements; I15: Environment; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 01516183
• Record Type: Publication
• Report/Paper Numbers: NCAT Report 13-07
• Files: TRIS
• Created Date: Feb 28 2014 12:30PM