INFLUENCE OF AGGREGATE ON RUTTING IN ASPHALT CONCRETE PAVEMENTS

Pavement cores were collected from rutting asphalt concrete pavements less than 2 years old. Laboratory tests revealed common causes of rutting, such as excessive asphalt content, excessive fine-grained aggregate, and high percentages of natural, rounded aggregate particles. A test program was designed and initiated to quantify the contribution to plastic deformation in laboratory-prepared asphalt concrete mixtures when increasing amounts of natural (uncrushed) aggregate particles are added to replace crushed particles. The objective is to generate supporting data and prepare specifications for maximum quantity of certain natural sands, minimum top-size aggregate, and minimum voids in mineral aggregate in paving mixtures to be placed on high traffic volume roadways. Tests on asphalt mixtures included unconfined compression, static and dynamic creep, and indirect tension; the particle index test was used on the aggregate. Results to date have indicated that susceptibility to plastic deformation increases dramatically when natural fine aggregate particles replace crushed particles in a given aggregate gradation. A new theoretical approach that includes the aggregate's influence on rutting is being considered. In this analysis the aggregate's characteristics are studied by using a factor in the creep-recovery performance of the mixture.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1990/1259/1259-013.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=INFLUENCE+OF+AGGREGATE+ON+RUTTING+IN+ASPHALT+CONCRETE+PAVEMENTS&author=J.+Button&author=D.+Perdomo&author=R.+Lytton&publication_year=1990
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1259, Chip Seals, Friction Courses, and Asphalt Pavement Rutting 1990.Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Button, Joe W
  • Perdomo, Dario
  • Lytton, Robert L.
• Publication Date: 1990

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 141-152
• Monograph Title: Chip seals, friction courses, and asphalt pavement rutting 1990
• Serial:
  • Transportation Research Record
  • Issue Number: 1259
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Aggregate gradation; Asphalt concrete; Creep tests; Fine aggregates; Laboratory tests; Mechanical relaxation; Natural aggregates; Plastic deformation; Ruts (Pavements); Sand; Tension; Void ratios
• Uncontrolled Terms: Rut; Susceptibility
• Old TRIS Terms: Indirect tension; Unconfined compression tests; Void
• Subject Areas: Geotechnology; Highways; Materials; Pavements; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials; I36: Aggregates;

Filing Info

• Accession Number: 00600673
• Record Type: Publication
• ISBN: 0309050162
• Files: TRIS, TRB, ATRI
• Created Date: Oct 31 1990 12:00AM