Accelerated Loading, Laboratory and Field Testing Studies to Fast-track the Implementation of Warm Mix Asphalt in California

The use of Warm-Mix Asphalt (WMA) has increased substantially in recent years and considerable funding has been allocated to research on the topic. Some road authorities have implemented its use based only on results from limited testing, while other states have adopted a more conservative approach. Given the significant differences to Hot-Mix Asphalt (HMA) practice and fears of a moratorium on the use of the technology if unexplained problems occur, the California Department of Transportation decided to follow a more conservative approach, by designing and implementing a phased comprehensive study. Phase 1 investigated rutting behavior of three different WMA technologies against an HMA control in an accelerated loading test with associated laboratory testing assessing rutting and fatigue performance and moisture sensitivity. A number of controlled pilot studies were also constructed during this phase. Phase 2 investigated the effects of the same three WMA technologies on moisture sensitivity in an accelerated loading test. Phase 3 investigated the use of seven different WMA technologies in rubberized asphalt following the same testing program used in Phase 1. The findings have been used to prepare a WMA technology approval process and a framework for statewide implementation that resulted in over one million tons of warm-mix asphalt being placed on state highways in the 2011 paving season. This paper provides an overview of the California WMA study and summarizes the results of the accelerated load and laboratory testing completed to date.

• Record URL:
  http://www.crcnetbase.com/doi/pdf/10.1201/b13000-25
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780415621380
• Corporate Authors:

  CRC Press

  6000 Broken Sound Parkway, NW, Suite 300
  Boca Raton, FL  United States  33487
• Authors:
  • Jones, David
  • 0000-0002-2938-076X
  • Wu, R Z
  • Tsai, B
  • Barros, C
  • Peterson, J
• Conference:
  • 4th International Conference on Accelerated Pavement Testing
  • Location: Davis CA, United States
  • Date: 2012-9-19 to 2012-9-21
• Publication Date: 2012

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 165-173
• Monograph Title: Advances in Pavement Design through Full-scale Accelerated Pavement Testing

Subject/Index Terms

• TRT Terms: Binders; Compaction; Field tests; Load tests; Pavement design; Pavement performance; Warm mix paving mixtures
• Geographic Terms: California
• Subject Areas: Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01456514
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• ISBN: 9780415621380
• Files: TRIS
• Created Date: Dec 7 2012 9:58AM