THE EFFECTS OF AGGREGATE GRADATION ON PERMANENT DEFORMATION OF ASPHALT CONCRETE

In recent years, technological advances seen in truck tires have led to increases in the loads that pavements are required to carry. The increases in both axle load and tire pressure have resulted in a great increase in the contact pressure at the tire-pavement interface. These developments have led to many premature pavement failures due to severe rutting in the wheel paths. With many active mines in the Nevada, the Nevada Department of Transportation (NDOT) has seen first hand how increased axle loads can lead to premature pavement rutting. It is hypothesized that by designing asphalt concrete mixtures to include more coarse aggregate, a mixture more resistant to rutting will be produced. To test this hypothesis, a research program was designed to look at the permanent deformation characteristics of mixtures using a variety of gradations tested under different laboratory conditions. The research program was initiated with a search of the current literature to identify test methods and methodologies that would aid in characterizing permanent deformation response. Then, based on the findings of the literature search, a laboratory testing program was initiated to identify mixtures that would perform better (relatively) than others considered in the research program.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02702932
• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  400 Selby Avenue, Suite I
  St Paul, MN  United States  55102
• Authors:
  • Krutz, N C
  • Sebaaly, P E
• Conference:
  • Asphalt Paving Technology 1993
  • Location: Austin, Texas
  • Date: 1993-3-22 to 1993-3-24
• Publication Date: 1993

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 450-473
• Serial:
  • Journal of the Association of Asphalt Paving Technologists
  • Volume: 62
  • 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: Aggregate gradation; Asphalt concrete; Axle load force; Deformation; Rutting; Tire forces
• Geographic Terms: Nevada
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials; I32: Concrete;

Filing Info

• Accession Number: 00763771
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: May 13 1999 12:00AM