VOIDS DISTRIBUTION AND PERFORMANCE OF ASPHALT CONCRETE

The three constituents - asphalt binder, aggregates, and voids - are usually not uniformly distributed in the mixture, resulting in the spatial gradients of the local volume fractions of these constituents. Because of the inhomogeneous distribution, the effective properties such as the elastic modulus also vary with spatial locations, resulting in inhomogeneity-induced stress concentration and/or strain localization. This paper presents the development of a method to quantify the local volume fractions of voids and their spatial gradients using X-ray tomography imaging and image analysis. The mean local volume fractions of voids and their gradients of the three WesTrack mixes were shown to be correlated to the mixture performance.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/16762797
• Corporate Authors:

  University of Mississippi, University

  Center for Advanced Infrastructure Technology
  University, MS  United States  38677-1848
• Authors:
  • Wang, Lin
  • Wang, Yinhi
  • Mohammad, L
  • Harman, T
• Publication Date: 2002-9

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 22-33
• Serial:
  • International Journal of Pavements
  • Volume: 1
  • Issue Number: 3
  • Publisher: University of Mississippi, University
  • ISSN: 1676-2797

Subject/Index Terms

• TRT Terms: Aggregates; Asphalt; Asphalt concrete; Binder content; Image processing; Mixtures; Performance evaluations; Tomography; Void ratios
• Subject Areas: Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00935098
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Dec 27 2003 12:00AM