You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    Volume 4, Issue 2 (June 1981)

    The Expansion Index Test

    Published Online: 01 June 1981


      Format Pages Price  
    PDF (384K) 10 $25   ADD TO CART

    Cite this document

    X Add email address send
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    The Expansion Index Test was developed a decade ago for laboratory determination of the expansion potential of soils. The initial conditions in this test are specified to provide a specimen that will produce a measurable amount of expansion with a fairly wide range and sensitivity in a 24 h period. Thus, the test provides an index to the expansion potential of soils. Thirteen soils were used in a correlation study between the expansion index and other indices of soil expansion potential. Five of these soils were used in a detailed study of the influence of the initial degree of saturation. Three of the soils were sent to geotechnical engineering firms to determine the reproducibility of test results. This study showed a good deal of scatter but on the order of similar studies for other tests. Respondents to a survey generally agreed that the Expansion Index Test produces a reliable index to soil expansion potential.

    Author Information:

    Anderson, JN
    Civil Engineer, U.S. Army Corps of Engineers, Los Angeles District, Geotechnical Branch, Los Angeles, Calif.

    Lade, PV
    Associate professor, University of California, Los Angeles, School of Engineering and Applied Science, Los Angeles, Calif.

    Stock #: GTJ10767J


    DOI: 10.1520/GTJ10767J

    Title The Expansion Index Test
    Symposium ,
    Committee D18