Field Performance of Warm-Mix Asphalt at National Center for Asphalt Technology Test Track

Warm-mix asphalt (WMA) mixes produced by an emulsion process were evaluated under accelerated loading in three total sections of the National Center for Asphalt Technology Test Track and used as the surface mix for two of the sections. Evotherm was incorporated into the same mixes used previously on the track. In-place densities of the WMA surface layers were equal to or better than the hot-mix asphalt (HMA) surface layers, even when compaction temperatures were reduced by 8°C to 42°C (15°F to 75°F). Laboratory rutting-susceptibility tests conducted in the asphalt pavement analyzer indicated similar performance for the WMA and HMA surface mixes with the PG 67-22 base asphalt. However, laboratory tests indicated an increased potential for moisture damage with the WMA mixes. The two WMA sections and the HMA section showed excellent rutting performance in the field after the application of 515,333 equivalent single-axle loads in a 43-day period. One of the WMA sections was also evaluated for quick turnover to traffic and showed good performance.

• Record URL:
  https://doi.org/10.3141/1998-12
• 
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=Field+Performance+of+Warm-Mix+Asphalt+at+National+Center+for+Asphalt+Technology+Test+Track&author=B.+Prowell&author=G.+Hurley&author=E.+Crews&publication_year=2007
• Availability:
  • Find a library where document is available. Order URL: http://www.trb.org/Main/Public/Blurbs/159462.aspx
• Authors:
  • Prowell, Brian D
  • Hurley, Graham Craft
  • Crews, Everett
• Publication Date: 2007

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 96-102
• Monograph Title: Bituminous and Nonbituminous Materials of Bituminous Paving Mixtures 2007
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Issue Number: 1998
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Accelerated tests; Emulsions; Equivalent single axle loads; Field tests; In place density; Laboratory tests; Moisture damage; Performance; Rutting; Test sections; Test tracks; Warm mix paving mixtures
• Identifier Terms: Asphalt Pavement Analyzer; National Center for Asphalt Technology
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01044215
• Record Type: Publication
• ISBN: 9780309104241
• Files: TRIS, TRB, ATRI
• Created Date: Feb 8 2007 7:12PM