USE OF CONSOLIDOMETER FOR MEASURING EXPANSION, POTENTIAL OF SOILS

THE CONSOLIDOMETER DEVICE DESCRIBED IN THIS REPORT HAS THE SOIL SPECIMEN ENCLOSED BETWEEN TOW POROUS PLATES. THE SOIL CAN BE WETTED FROM THE BOTTOM OR TOP. AN IMPORTANT ASPECT OF THE DEVICE IS THE ABILITY TO HOLD THE UPPER LOADING BAR AT A CONSTANT VOLUME, PERMITTING MEASUREMENT OF THE MAXIMUM UPLIFT PRESSURE OF THE SOIL WITH NO VOLUME CHANGE. WITH THIS EQUIPMENT IT IS ALSO POSSIBLE TO LOAD THE SAMPLER WITH VARIOUS SMALL LOADS TO OBSERVE THE AMOUNT OF EXPANSION. THREE EXAMPLES WERE GIVEN WHICH ILLUSTRATED THE USE OF THE CONSOLIDOMETER. IN THE FIRST EXAMPLE, A DETERIORATING SHALE FROM A TUNNEL WAS TESTED TO DETERMINE WHAT EXPANSION CHARACTERISTICS COULD BE RELATED TO ITS DETERIORATION. THE SECOND EXAMPLE INVOLVED A CLAY GOUGE MATERIAL BETWEEN THE ROCK SEAMS IN A TUNNEL. THE MATERIAL WAS BULGING OUT APPRECIABLY. IT WAS TESTED TO DETERMINE IF THIS CONDITION WAS AN EXPANSIVE CLAY PROBLEM OR WAS DUE TO THE STRESS RELIEF OF THE TUNNEL. THE THIRD EXAMPLE WAS A MODERATELY EXPANSIVE CLAY IN A CANAL. IT WAS DESIRED TO SHOW THAT THIS MATERIAL, ALTHOUGH A MODERATELY EXPANSIVE MATERIAL, IF KEPT AT THAT CONDITION COULD BE TOLERATED WITHOUT APPRECIABLE DAMAGE TO THE CANAL LININGS.

  • Supplemental Notes:
    • Proceedings, Workshop on Expansive Clays and Shales in Highway Design and Construction, Denver, Colorado, 1972. Available in 2 volumes from NTIS, PB-225842.
  • Corporate Authors:

    University of Wyoming, Laramie

    Wyoming Survey and Analysis Center, 710 Garfield
    Laramie, WY  United States  82070

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Gibbs, H J
  • Publication Date: 1973-5

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00230352
  • Record Type: Publication
  • Report/Paper Numbers: Workshop Proceedings
  • Files: TRIS, USDOT
  • Created Date: Jul 31 1974 12:00AM