Volume 17, Issue 1 (March 1994)

    A Critical Evaluation of the Gradient Ratio Test

    CODEN: GTJOAD

      Format Pages Price  
    PDF Version 8 $25   ADD TO CART


    Abstract

    Tests performed in a permeameter have been used to evaluate the gradient ratio test method. The evaluation is based on observed variations of water head and permeability in the composite soil and geotextile specimen with respect to time and with imposed hydraulic gradient. A water pluviation technique was used to reconstitute homogeneous, saturated sand specimens in the permeameter at any targeted density. An energy dissipator was used to prevent disturbance of the top of the specimen by inlet water at large flow rates. Some physical clogging of the soil may result from a blinding action due to fines in the recirculating water. Biological clogging may also occur, but is eliminated by treatment of the water with an algicide.


    Author Information:

    Fannin, RJ
    Assistant professor, University of British Columbia, Vancouver, B.C.

    Vaid, YP
    professor, University of British Columbia, Vancouver, B.C.

    Shi, Y
    graduate student, University of British Columbia, Vancouver, B.C.


    Stock #: GTJ10070J

    ISSN: 0149-6115

    DOI: 10.1520/GTJ10070J

    ASTM International is a member of CrossRef.

    Author
    Title A Critical Evaluation of the Gradient Ratio Test
    Symposium , 0000-00-00
    Committee D18