Laboratory conditioning protocols for warm-mix asphalt

The rapid implementation of warm-mix asphalt (WMA) across the world during the past decade has risen due to economic, environmental, and engineering benefits. Standard mix design protocols remain under development, even as WMA technologies have been successfully utilized as a paving material. A study on the effect of laboratory conditioning protocols (prior to compaction) on the performance of hot-mix asphalt (HMA) and WMA mixtures made with chemical additives, wax additives, or a foaming process was performed. In order to evaluate the properties of the extracted binders and mixtures conditioned with different protocols, resilient modulus (M sub R), dynamic shear rheometer (DSR), and image analysis techniques were used. Laboratory mixed laboratory compacted (LMLC) specimens conditioned for 2 hours at 240°F (116°C) for WMA and 275°F (135°C) for HMA had stiffness similar to those of cores collected during the early life of field pavements. Different conditioning protocols are recommended for off-site plant mixed laboratory compacted (PMLC) specimens to simulate the stiffness of plant mixed field compacted (PMFC) cores at construction: for WMA with additives reheat to 240°F (116°C), and for HMA and foamed WMA reheat to 275°F (135°C).

• Summary URL:
  • http://www.asphalttechnology.org/downloads/%284%29-Abstract-FYin.pdf
• Availability:
  • Find a library where document is available. Order URL: http://www.asphalttechnology.org/annual-journal/current-issue.html
• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  6776 Lake Drive
  Lino Lakes, MN  United States  55014

  DEStech Publications, Inc.

  439 Duke Street
  Lancaster, Pennsylvania  United States  17602
• Authors:
  • Yin, Fan
  • Cucalon, Lorena Garcia
  • Martin, Amy Epps
  • Arambula, Edith
  • Chowdhury, Arif
  • Park, Eun Sug
• Conference:
  • 2013 Association of Asphalt Paving Technologists Annual Meeting
  • Location: Denver Colorado, United States
  • Date: 2013-4-7 to 2013-4-10
• Publication Date: 2013

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 177-212
• Monograph Title: Asphalt Paving Technology 2013
• Serial:
  • Journal of the Association of Asphalt Paving Technologists
  • Issue Number: 82
  • Publisher: Association of Asphalt Paving Technologists (AAPT)
  • ISSN: 0270-2932
  • Serial URL: https://www.asphalttechnology.org/site_page.cfm?pk_association_webpage_menu=9169&pk_association_webpage=19109

Subject/Index Terms

• TRT Terms: Hot mix asphalt; Laboratory tests; Mix design; Stiffness; Warm mix paving mixtures
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01515655
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 24 2014 5:00PM