Evaluation of Gap-Graded Asphalt Concrete Mixtures, Vol. 1. Physical Properties (Part I: Mechanical Properties)

This report presents the results of a comparative laboratory study between well- and gap-graded aggregates used in asphalt concrete paving mixtures. A total of 424 batches of asphalt concrete mixtures and 3, 960 Marshall and Hveem specimens were examined. There is strong evidence from this investigation that, with proper combinations of aggregates and asphalts, both continuous- and gap-graded aggregates can produce mixtures of high density and of qualities meeting current design criteria. There is also reason to believe that the unqualified acceptance of some supposedly desirable, constant, mathematical relationship between adjacent particle sizes of the form such as Fuller's curve p = 100(d/D) supra n is not justified. It is recommended that the aggregate grading limits be relaxed or eliminated and that the acceptance or rejection of an aggregate for use in asphalt pavement be based on individual mixture evaluation. Furthermore, because of the potential attractiveness of gap-graded asphalt concrete in cost, quality, and skid and wear resistance, selected gap-graded mixtures are recommended for further tests both in the laboratory and in the field, especially in regard to ease of compaction and skid and wear resistance.

• Record URL:
  http://publications.iowa.gov/id/eprint/19630
• Corporate Authors:

  Iowa State University, Ames

  Engineering Research Institute
  Ames, IA  United States  50010

  Iowa Highway Research Board

  800 Lincoln Way
  Ames, IA  United States  50010

  Iowa State Highway Commission

  800 Lincoln Way
  Ames, IA  United States  50010

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Lee, Dah-Yinn
  • David, Herbert T
  • Mensing, Richard W
• Publication Date: 1973-1

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Figures; References; Tables;
• Pagination: 130p

Subject/Index Terms

• TRT Terms: Asphalt concrete; Asphalt concrete pavements; Durability; Gap graded aggregates; Mechanical properties; Skid resistance
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials; I36: Aggregates;

Filing Info

• Accession Number: 01575749
• Record Type: Publication
• Report/Paper Numbers: ISU-ERI-AMES-72251, IHRB Project HR-157, ERI Project 900-S
• Contract Numbers: HR-157 (ERI 900S)
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Sep 10 2015 3:52PM