Analysis of Factors Influencing WMA Short-Term Aging Using Grey Correlation Theory

The asphalt binder aging in the mixing and compaction process of a mixture is known as short-term aging. In this paper, the binder is extracted from the mixed and compacted warm mix asphalt (WMA) mixture by the rotary evaporator method. Penetration, softening point, and ductility of extracted binder are measured. The factors influencing WMA short-term aging are analyzed using Grey correlation theory. The test results show that the importance of factors in deciding the WMA short-term aging has the following sequence: mixture mixing temperature>type of WMA technology>aggregate heating temperature>nominal maximum particle size>volume of air voids. It validates the WMA technology and reduces the aging of the binder due to the reduction of mixing temperature. The shell finished warm-asphalt has a smaller degree of binder's short-term aging process.

• Record URL:
  • https://doi.org/10.1061/9780784413159.284
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784413159
• Supplemental Notes:
  • © 2013 American Society of Civil Engineers
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Xu, Zhoucong
  • Liu, Liping
• Conference:
  • Fourth International Conference on Transportation Engineering
  • Location: Chengdu , China
  • Date: 2013-10-19 to 2013-10-20
• Publication Date: 2013-10

Language

• English

Media Info

• Media Type: Web
• Pagination: pp 1963-1968
• Monograph Title: ICTE 2013: Safety, Speediness, Intelligence, Low-Carbon, Innovation

Subject/Index Terms

• TRT Terms: Aging (Materials); Air voids; Asphalt mixtures; Bituminous binders; Temperature; Warm mix paving mixtures
• Uncontrolled Terms: Nominal maximum aggregate size
• Subject Areas: Highways; Materials; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01520522
• Record Type: Publication
• ISBN: 9780784413159
• Files: TRIS, ASCE
• Created Date: Mar 29 2014 6:13PM