PERFORMANCE OF CRUSHED-STONE BASE COURSES

Twelve full-scale, instrumented pavement sections were tested to failure in a special laboratory facility under closely controlled environmental conditions. Seven of the pavement sections were loaded to more than 1 million repetitions and five of these sections to more than 2 million repetitions. A 6.5-kip (29-kN) uniform circular loading was applied to the surface and systematically moved to prevent a punching failure. Pavements tested consisted of five conventional sections having crushed-stone bases, five full-depth asphalt-concrete sections, and two inverted sections. The inverted sections consisted of a crushed-stone base sandwiched between a lower cement-stabilized layer and an upper asphalt-concrete layer. Conventional sections were tested with two thicknesses of base and three base gradations. The crushed-stone base sections were found to give excellent performance when covered with asphalt concrete 3.5 in. (89 mm) thick. Good performance of the engineered crushed-stone base is attributed to (a) a uniform, high degree of density (100 percent of AASHTO T-180), (b) use of a well-graded crushed stone with 1- to 2-in. (25- to 50-mm) top size that has only 4 to 5 percent passing the No. 200 sieve, (c) practically no segregation, and (d) a relatively thin asphalt-concrete surfacing.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1984/954/954-010.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=PERFORMANCE+OF+CRUSHED-STONE+BASE+COURSES&author=R.+Barksdale&publication_year=1984
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309036747
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Strength and Deformation Characteristics of Pavement Sections. 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:
  • Barksdale, Richard D
• Publication Date: 1984

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 78-87
• Monograph Title: Design, evaluation, and performance of pavements
• Serial:
  • Transportation Research Record
  • Issue Number: 954
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Accelerated tests; Cement treated soils; Crushed rock; Failure; Full-depth asphalt pavements; Laboratory tests; Pavement base course; Pavement layers; Pavements; Performance; Repeated loads; Soil cement; Thickness
• Uncontrolled Terms: Pavement thickness
• Subject Areas: Geotechnology; Highways; Pavements; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00391032
• Record Type: Publication
• ISBN: 0309036747
• Files: TRIS, TRB
• Created Date: Dec 30 1984 12:00AM