EFFECT OF FLAT AND ELONGATED COARSE AGGREGATE ON CHARACTERISTICS OF GYRATORY COMPACTED SAMPLES

This report presents findings on the effect of flat and elongated coarse aggregate particles on the volumetrics of Superpave Gyratory Compactor (SGC) prepared asphalt mixtures. Select aggregate sources were sampled to provide aggregate with varying levels of flat and elongated particles. The particles were hand separated and classified according to the flat and elongated ratio. Mixtures with specific gradations were assembled using the gravel and dolomite aggregates with controlled percentages of 3 to 1 and 5 to 1 particle shapes. Changes in the gradations of the compacted mixtures were noted and related to initial particle shapes and amounts and the aggregate source. No significant impact on mixture volumetrics could be assigned to the presence of flat and elongated particles.

• Record URL:
  http://www.ict.uiuc.edu/Publications/report%20files/TES-109.pdf
• 
• Corporate Authors:

  University of Illinois, Urbana-Champaign

  Department of Civil and Environmental Engineering
  205 North Mathews Avenue
  Urbana, IL  United States  61801-2352

  Illinois Department of Transportation

  Bureau of Materials and Physical Research
  126 East Ash Street
  Springfield, IL  United States  62704-4766

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Vavrik, W R
  • Fries, R J
  • Carpenter, S H
  • Aho, B D
• Publication Date: 2000-3

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 70 p.

Subject/Index Terms

• TRT Terms: Aggregate gradation; Air voids; Asphalt mixtures; Coarse aggregates; Compaction; Dolomite; Gravel; Gyratory testing machines; Particles; Shape; Superpave; Volumetric analysis
• Subject Areas: Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials; I36: Aggregates;

Filing Info

• Accession Number: 00800180
• Record Type: Publication
• Report/Paper Numbers: FHWA-IL-UI-276,, UILU-ENG-2000-2011,, Project Report
• Contract Numbers: IHR-R22
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Oct 12 2000 12:00AM