Use of Fine-Graded Asphalt Mixtures

Thin hot mix asphalt (HMA) overlays are more economical than traditional overlays and mitigate problems with curb/gutter height restrictions. Though still more expensive than surface treatments, these mixes should not have chip-loss problems and, because of the fine texture, are relatively quiet. When properly designed and constructed, they may provide a service life comparable to traditional mixes. Another option for thin pavement maintenance is slurry overlay systems. These emulsion- or cement-based materials are spread or sprayed onto the pavement surface at ambient temperatures, do not require compaction, and can be opened to traffic after a short time. This research (1) monitored existing thin overlay performance, (2) developed new thin overlay specifications that districts can easily and cost-effectively implement, (3) worked with districts to construct new thin overlay test sections, and to a lesser extent (4) evaluated various slurry overlay systems in similar applications.

• Summary URL:
  https://library.ctr.utexas.edu/dbtw-wpd/exec/dbtwpub.dll?AC=QUERY&TN=catalog&RL=1&RF=.Detail&DF=.Detail&BU=http%3A%2F%2Flibrary.ctr.utexas.edu%2Fcatalog&QY=find+ID+%3D+31480&utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+NewestTxdotResearch+%28New+TxDOT+Research+Publications+%28Feed%29%29
• Corporate Authors:

  Texas A&M Transportation Institute

  Texas A&M University System
  3135 TAMU
  College Station, TX  United States  77843-3135

  Texas Department of Transportation

  Research and Technology Implementation Office, P.O. Box 5080
  Austin, TX  United States  78763-5080

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Scullion, Tom
  • Estakhri, Cindy
  • Wilson, Bryan T
• Publication Date: 2013

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Project Summary
• Pagination: 2p

Subject/Index Terms

• TRT Terms: Bituminous overlays; Hot mix asphalt; Mix design; Pavement performance; Slurry seals
• Geographic Terms: Texas
• Subject Areas: Highways; Materials; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01481638
• Record Type: Publication
• Report/Paper Numbers: 0-6615
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: May 20 2013 3:30PM