Spotlight on Pavement Safety: Implementing Macrotexture in Asphalt Mixture Design

Details

• Corporate Creators:
  United States. Department of Transportation. Federal Highway Administration
• Contributors:
  Mergenmeier, Andrew
• Subject/TRT Terms:
  • Macrotexture
  • Asphalt pavements
  • Asphalt mixtures
  • Friction course
• Publication/ Report Number:
  FHWA-HIF-23-051
• Resource Type:
  Brief
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Department of Transportation. Federal Highway Administration
• Abstract:
  Macrotexture is generally provided in asphalt pavement through aggregate gradation in the surface layer that provides voids or channels for water on the pavement to drain. For years, the focus on dense-graded asphalt (DGA) surface mixes in particular has been on durability, which has the potential to result in less surface macrotexture than in the past. While macrotexture has been widely addressed through the use of open-graded friction courses in parts of the United States, the impacts of climate change (more intense and frequent rainfall events) have highlighted the need for enhanced pavement friction in more of the country. Further, challenges with efficient construction project delivery can result in longer work zone durations, which in turn can leave temporary pavement surfaces not designed with macrotexture in mind to be open to traffic much longer than intended.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/72783/dot_72783_DS1.pdf
• File Type:
  [PDF - 701.50 KB]
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:5e1306c586e4172a0f0411648a9452b6d11ed3aa3622b492f432fa56d3b5fe6a40164379b672a43448e317b1dc2e71592f007b792062b55d9d944a4ad8f16f4f