A LABORATORY INVESTIGATION INTO THE EFFECTS OF AGGREGATE-RELATED FACTORS OF CRITICAL VMA IN ASPHALT PAVING MIXTURES

This report summarizes research conducted at Iowa State University on behalf of the Iowa Department of Transportation, focusing on the volumetric state of hot-mix asphalt (HMA) mixtures as they transition from stable to unstable configurations. This has traditionally been addressed during mix design by meeting a minimum voids in the mineral aggregate (VMA) requirement, based solely upon the nominal maximum aggregate size without regard to other significant aggregate-related properties. The goal was to expand the current specification to include additional aggregate properties, e.g., finesse modulus, percent crushed fine and coarse aggregate, and their interactions. The work was accomplished in three phases: a literature review, extensive laboratory testing, and statistical analysis of test results.

• Record URL:
  http://www.ctre.iastate.edu/reports/VMA.pdf
• Record URL:
  http://publications.iowa.gov/id/eprint/11672
• 
• Corporate Authors:

  Iowa State University, Ames

  Center for Transportation Research and Education
  2711 South Loop Drive, Suite 4700
  Ames, IA  United States  50010-8664
• Authors:
  • Hislop, W
  • Corree, B
• Publication Date: 2000-6

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 96 p.

Subject/Index Terms

• TRT Terms: Aggregate gradation; Aggregate mixtures; Asphalt mixtures; Coarse aggregates; Fine aggregates; Hot mix asphalt; Void ratios
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00799096
• Record Type: Publication
• Report/Paper Numbers: TR-415,, Final Report
• Files: TRIS, STATEDOT
• Created Date: Sep 2 2003 12:00AM