Superpave Mix Design: Verifying Gyration Levels in the Ndesign Table

This report presents the findings of a research project to validate the gyration levels in the Ndesign table in AASHTO R 35 by following the behavior under traffic of a series of field projects. Its main finding is that, based on ultimate pavement densities achieved on 40 field projects in 16 states across the United States, modest reductions in Ndesign are possible. Such reductions, if adopted, should lead to hot mix asphalt (HMA) mix designs that are more readily compacted in the field. The report will be of particular interest to materials engineers in state highway agencies, as well as to materials suppliers and paving contractor personnel responsible for the specifications, design, and production of HMA.

• Record URL:
  • https://nap.nationalacademies.org/catalog/23207
• 
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780309098779
• Authors:
  • Prowell, Brian D
  • Brown, E Ray
• Publication Date: 2007

Language

• English

Media Info

• Media Type: Print
• Features: Appendices; Figures; References; Tables;
• Pagination: 70p
• Serial:
  • NCHRP Report
  • Issue Number: 573
  • Publisher: Transportation Research Board
  • ISSN: 0077-5614

Subject/Index Terms

• TRT Terms: Density; Field studies; Hot mix asphalt; Mix design; Specifications; Superpave; Validation
• Uncontrolled Terms: Gyration levels; Gyratory compaction
• Geographic Terms: United States
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01046074
• Record Type: Publication
• ISBN: 9780309098779
• Report/Paper Numbers: Project 9-9(1)
• Files: TRIS, TRB, ATRI
• Created Date: Apr 13 2007 3:21PM