Influence of Asphalt Binder Properties on the Fatigue Performance of Asphalt Concrete Pavements (With Discussion)

A number of studies have suggested that limits for the loss stiffness of the binder, G*sin delta, in the American Association of State Highway and Transportation Officials (AASHTO) binder specification is, by itself, not a sufficient indicator of the fatigue performance of asphalt concrete (AC) in asphalt pavement structures. To assist the Pacific Coast Conference on Asphalt Specifications (PCCAS) in deliberations pertaining to the AASHTO binder specification, this study was undertaken. The purpose of the study was to evaluate the influence of nine binders, selected by the PCCAS participants, on pavement fatigue performance for a representative range in pavement sections, environmental conditions, and traffic loading. The program has included: 1) tests on the binders to define their rheologic response over a range in temperatures and times of loading; 2) fatigue tests on mixes containing the binders; and 3) analysis of the simulated fatigue performance of the mixes in pavement structures in four environments of the Pacific region. With the exception of the thin AC pavement structure, mixes containing the nine binders provided adequate simulated fatigue performance (estimated ESALs equal to or exceeding design ESALs) at a 90% reliability level. Two alternatives for the binder fatigue requirement are briefly discussed, i.e., retain the current specification requirement or eliminate it. If the current fatigue requirement is eliminated, the question to be asked by the pavement community is what might happen without it? For example, could materials which are different than those used in this investigation (all of which met the current criterion and performed adequately according to the pavement simulations) result from changes in production? Until this question can be resolved, it is recommended that the prudent course is to maintain the current requirement.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/70700638
• Authors:
  • Tsai, Bor-Wen
  • Monismith, C L
• Discussers:
  • Dunning, Michael
  • Gibson, Nelson
  • D'Angelo, John
  • Leahy, Rita
  • King, Gayle
  • Christensen, Donald
  • Anderson, David
  • Davis, Richard
  • Jones, David
• Conference:
  • 2005 Journal of the Association of Asphalt Paving Technologists: From the Proceedings of the Technical Sessions
  • Location: Long Beach CA, United States
  • Date: 2005-3-7 to 2005-3-9
• Publication Date: 2005

Language

• English

Media Info

• Media Type: Print
• Features: Appendices; CD-ROM; Figures; References; Tables;
• Pagination: pp 733-790
• Serial:
  • Journal of the Association of Asphalt Paving Technologists
  • Volume: 74
  • 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: Asphalt concrete; Asphalt concrete pavements; Asphalt mixtures; Binders; Bituminous binders; Bituminous mixtures; Fatigue (Mechanics); Fatigue tests; Loading and unloading; Pavement performance; Specifications; Stiffness; Traffic loads
• Identifier Terms: AASHTO Guide Specifications
• Uncontrolled Terms: Environmental conditions; Fatigue performance; Rheologic effects
• Subject Areas: Design; Freight Transportation; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01020738
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 27 2006 11:07AM