Development of Quality Standards for Inclusion of High Recycled Asphalt Pavement Content in Asphalt Mixtures – Phase Ⅳ

Details

• Creators:
  Lee, Hosin David ; Moon, Byungkyu ; Williams, Chris
• Corporate Creators:
  University of Iowa. Iowa Technology Institute
• Corporate Contributors:
  Iowa. Department of Transportation ; Iowa Highway Research Board
• Subject/TRT Terms:
  Asphalt Mixtures Asphalt Pavements Mix Design Quality Control Recycled Materials Rejuvenators Standards Warm Mix Paving Mixtures
• Publication/ Report Number:
  IHRB Project TR-770
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Corporate Publisher:
  Iowa Department of Transportation
• Abstract:
  Public highway agencies encourage the use of recycled asphalt materials (RAM) in constructing pavements to the maximum extent possible with an equal performance. Low temperature cracking potential is a primary concern with high RAM mixtures, which is caused by the aging of asphalt through the oxidation. To minimize a low temperature cracking, various rejuvenators have been utilized in the past instead of bumping down a PG grade of the specified virgin asphalt for high RAM mixes. Although the current Iowa DOT’s specification allows RAP materials up to 30% with softer binder, limited construction projects have been performed, which utilized more than 20% RAP materials.
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:b033e93f617f62475811e54ad3962858fda52439e9c44b657f7ffa82060b14fe6924d478f565345f4eaa6039a156c88b9cd8ce9dc7345f76dcde564f15f13bf8
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/79641/dot_79641_DS1.pdf
• File Type:
  [PDF - 3.76 MB ]