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https://nap.nationalacademies.org/catalog/27432/critical-issues-in-transportation-for-2024-and-beyond

THE VARIABILITY OF DYNAMICALLY-DETERMINED POISSON'S RATIOS AND SOME FACTORS THAT MAY AFFECT THE VARIABILITY

Poisson's ratio is a commonly-determined quantity in engineering studies of earth materials. As long as the earth material is consolidated, relatively unfractured rock, Poisson's ratio correlates fairly well with the elastic properties of the material. However, when dealing with unconsolidated materials, there are wide variations in the value of Poisson's ratio. The author has measured Poisson's ratios of approximately 0.10 for well-compacted fills, and Poisson's ratios of approximately 0-35 for unconsolidated alluvial materials. This investigation, in addition to work reported in the literature, suggests that shear and compressional wave speeds, and hence, Poisson's ratio, may be a much more complex function of the material properties for unconsolidated materials than for consolidated materials. Some of the important variables may be cohesion, or lack of it, amount and type of porosity and degree of saturation. /Author/

  • Supplemental Notes:
    • Presented at the 12th Annual Engineering Geology and Soils Engineering Symposium, Boise, Idaho, April 3-5, 1974, which was sponsored by the Idaho Transportation Department Division of Highways, Univ. of Idaho Colleges of Engineering and Mines, and Idaho State Univ. Departments of Geology and Engineering.
  • Corporate Authors:

    Idaho Transportation Department

    3311 W State Street, P. O. Box 7129
    Boise, ID  United States  83707-1129
  • Authors:
    • Applegate, J K
  • Publication Date: 1974-4

Media Info

  • Features: Figures; References;
  • Pagination: 12 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00265519
  • Record Type: Publication
  • Report/Paper Numbers: Conf Paper
  • Files: TRIS, STATEDOT
  • Created Date: Feb 27 1975 12:00AM