PAVEMENT DESIGN OF UNSURFACED ROADS

In some tropical countries, such as Thailand and Ecuador, unpaved soil-aggregate roads are normally constructed when the average daily traffic is less than 300. These pavements are generally constructed of a single layer of subbase, which varies in depth from 5 to 14 in. Currently, various empirical models give different results for the pavement design of unsurfaced roads. This study presents a design model that has been developed to provide a rational design methodology for low-volume unsurfaced roads. This methodology is based on the theory of plasticity. It has been found to be computable with the up-to-date experience in Ecuador and Thailand, according to which 8 in of gravel and 6 in of laterite carried about 25000 and 5000 equivalent standard axles per lane in Ecuador and Thailand on silty sand and silty subgrade, respectively. (Author)

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1981/827/827-004.pdf
• Summary URL:
  https://scholar.google.com/scholar_lookup?title=PAVEMENT+DESIGN+OF+UNSURFACED+ROADS&author=J.+Greenstein&author=M.+Livneh&publication_year=1981
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Low-Volume Roads. 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:
  • Greenstein, Jacob
  • Livneh, Moshe
• Conference:
  • 60th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1981-1-12 to 1981-1-16
• Publication Date: 1981

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 21-26
• Monograph Title: General soils problems
• Serial:
  • Transportation Research Record
  • Issue Number: 827
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Design; Laterites; Low volume roads; Pavement design; Plasticity; Silty sands; Soil aggregates; Subgrade (Pavements); Tropics; Unpaved roads
• Uncontrolled Terms: Design criteria
• Subject Areas: Design; Geotechnology; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00348892
• Record Type: Publication
• ISBN: 0309032695
• Files: TRIS, TRB
• Created Date: Oct 30 1982 12:00AM