Central and Eastern Oregon have many roads which are built with cinders or overlie pumice volcanic materials. These roads, designed using standard procedures such as the Hveem Stabilometer or CBR method, often do not perform as expected. In fact, in some cases very low pavement lives are experienced. In an attempt to more accurately predict pavement life for Central and Eastern Oregon roads, resilient properties for volcanic materials taken along two existing highway sections were evaluated using repeated load triaxial tests. The cinder base and pumice subgrade materials were tested over a range of moisture conditions (wet and dry) and densities (high and low). The test results were used with multilayer elastic theory to predict pavement deflections and pavement life. For the two road sections considered, a favorable comparison between predicted and observed deflections was obtained indicating the resilient properties of the materials accurately reflected the field condition. A comparison between predicted pavement lives and the actual performance for the two roads was also favorable. The predicted results indicated that there was a considerable reduction in pavement life for the wet versus the dry subgrade condition. (Author)

  • Supplemental Notes:
    • Proceedings of the Eighteenth Annual Engineering Geology and Soils Engineering Symposium, held at the Red Lion Inn, Boise, Idaho.
  • Corporate Authors:

    Idaho Transportation Department

    3311 W State Street, P. O. Box 7129
    Boise, ID  United States  83707-1129

    University of Idaho, Moscow

    Department of Geology and Geological Engineering
    Moscow, ID  United States  83844-3025

    Boise State University

    Department of Geology and Geophysics
    Boise, ID  United States 

    Idaho State University, Pocatello

    Department of Geology
    Pocatello, ID  United States  83201

    Idaho State University, Pocatello

    Department of Geology
    Pocatello, ID  United States  83201
  • Authors:
    • HULL, T
    • VINSON, T S
    • Hicks, R G
  • Conference:
  • Publication Date: 1980-4

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 215-232

Subject/Index Terms

Filing Info

  • Accession Number: 00334068
  • Record Type: Publication
  • Created Date: Sep 16 1981 12:00AM