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Abstract

 

This article in SSSAJ

  1. Vol. 40 No. 4, p. 557-562
     
    Received: Dec 22, 1975
    Accepted: Mar 11, 1976


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doi:10.2136/sssaj1976.03615995004000040029x

Influence of Physical and Mineralogical Properties on Swelling of Soils in Yolo County, California1

  1. William M. Schafer and
  2. Michael J. Singer2

Abstract

Abstract

Surface samples from 16 California soils with a wide range of swelling characteristics were studied. The coefficient of linear extensibility (COLE) of each soil was correlated with other properties. Total clay content was highly correlated with COLE (r2 = 0.868) while the ratio of expandable clay/total clay (partial r2 = 0.454) also significantly affects swelling. The percent of expandable clay is the single variable best correlated with COLE (r2 = 0.907). Models established to predict COLE from other soil properties were selected from the literature and applied to these soils. Results are compared with measured COLE values, and a new model calculating COLE from interlayer expansion of the smectite fraction of soil is proposed.

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