FATIGUE CHARACTERISTICS OF SUPERPAVE AND HVEEM MIXTURES

A study was conducted to evaluate the fatigue characteristics of hot mix asphalt (HMA) mixtures designed using the Superpave volumetric method and Nevada's Hveem method. Fatigue characteristics were evaluated using the flexural beam fatigue test under the strain-controlled mode of loading. The influence of long-term oven aging on the fatigue performance was also evaluated. Analysis of variance statistic and principal component analysis were used for comparing and ranking mixtures fatigue performance. Results indicate that Superpave mixtures performed better in fatigue than Nevada's Hveem mixtures on two projects while the opposite was observed on the other project. Additionally a reduction in fatigue life was observed for the unmodified asphalt mixtures in general as a result of aging, whereas the polymer modified asphalt mixtures didn't show any reduction in fatigue resistance due to aging. An increase in the initial flexural stiffness didn't necessarily reduce the beam fatigue life in the strain-controlled mode of loading. Two generalized performance models are presented in this paper. The first model relates the number of load repetitions to failure to the tensile strain and the flexural stiffness of the mixture, while the second model includes a volumetric term that is a function of the asphalt binder content and air voids. The multiple linear regression analysis indicates that the model accuracy increases significantly when the volumetric term is included.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/8674831
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Hajj, E Y
  • Sebaaly, P E
  • Weitzel, D
• Publication Date: 2005-4

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 302-310
• Serial:
  • Journal of Transportation Engineering
  • Volume: 131
  • Issue Number: 4
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-947X
  • Serial URL: https://ascelibrary.org/journal/jtepbs

Subject/Index Terms

• TRT Terms: Aging (Materials); Asphalt mixtures; Asphalt pavements; Fatigue (Mechanics); Fatigue strength; Flexural strength; Load tests; Mathematical models; Polymer asphalt; Statistical analysis; Stiffness; Superpave; Tension
• Identifier Terms: Hveem
• Subject Areas: Data and Information Technology; Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00987573
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Mar 30 2005 12:00AM