STRUCTURAL AND MIXTURE DESIGN OF LOW VOLUME ROADS USING THE ELASTIC THEORY

The purpose of this paper is to establish mixture and thickness designs for materials to be stabilized in place on several low volume U.S. Forest Service Roads. The results of a repeated load trialial compression test in terms of resistance to permanent deformation are used to establish appropriate mixture designs. Thickness designs are established by the elastic theory using the stress-strain properties of the materials determined from the repeated load triaxial compression test and an appropriate failure criteria. The stress-strain properties were defined for one temperature (75 F) and one loading time (1 sec) in order to reduce the amount of testing required. The failure criteria used, consiste of limiting the vertical strain at the top of the embankment and the tensile strain at the bottom of the stabilized layer. These criteria were adopted from the work of others and applied to the pavement system being studied. Several assumptions were made in order to use these criteria with the limited testing schedule used. A thickness design curve is developed using an analysis of the elastic properties of the materials by the Chevron N-Layer Elastic Systems Program and the adopted failure criteria. Designs are established for three low volume roads using the developed design curve. It is tentatively planned to use one of the designs developed in this study for the construction of a test road. The variables to be studied from the test road include: asphalt type, asphalt content and thickness of the stabilized layer. The test road will be instrumented to provide measurements of the critical parameters defined by this study. /Author/

  • Supplemental Notes:
    • Presented at the Third International Conference on the Structural Design of Asphalt Pavements, Grosvenor House, Park Lane, London, England, Sept. 11-15, 1972.
  • Corporate Authors:

    International Conf Struct Design Asph Pvmts (3rd)

    University of Michigan, Department of Civil Engineering
    Ann Arbor, MI  USA  48104

    International Conf Struct Design Asph Pvmts (3rd)

    University of Michigan, Department of Divil Engineering
    Ann Arbor, MI  USA  48104

    Interrational Conf Struct Design Asph Pvmts (3rd)

    University of Michigan, Department of Civil Engineering
    Ann Arbor, MI  USA  48104
  • Authors:
    • Root, R E
    • Skok, E L
    • Jones, D L
  • Conference:
  • Publication Date: 1972-9

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 1074-83
  • Serial:
    • Volume: 1

Subject/Index Terms

Filing Info

  • Accession Number: 00261899
  • Record Type: Publication
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Oct 22 1974 12:00AM