My Account: Log In | Join | Renew
Search
Author
Title
Vol.
Issue
Year
1st Page

Abstract

 

This article in SSSAJ

  1. Vol. 41 No. 6, p. 1059-1064
     
    Received: Oct 4, 1976
    Published: Nov, 1977


 View
 Download
 Alerts
 Permissions

doi:10.2136/sssaj1977.03615995004100060008x

An Evaluation of Several Methods of Estimating Soil Volume Change1

  1. J. C. Parker,
  2. D. F. Amos and
  3. D. L. Kaster2

Abstract

Abstract

The accuracy of several previously proposed methods of estimating potential soil volume change was evaluated using samples from the B2 horizons of three pedons of each of five soil series having various swelling characteristics. Models involving swell index, plasticity index, clay content, activity index, initial and final water contents, shrinkage limit, shrinkage ratio, liquid limit, linear shrinkage, and hygroscopic moisture content were evaluated by regression analysis with percent volume change of natural clods as the dependent variable. Most methods were found to be either too imprecise or too involved to be useful. The most practical correlations were with swell index (r2 = 0.92) and with plasticity index (r2 = 0.79). Estimates using these procedures should be used cautiously since their accuracy is only ± 12 to 18% volume change, respectively, at the 95% confidence level.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © . Soil Science Society of America

Facebook   Twitter