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Influence of Physical and Mineralogical Properties on Swelling of Soils in Yolo County, California
Author(s) -
Schafer William M.,
Singer Michael J.
Publication year - 1976
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1976.03615995004000040029x
Subject(s) - swelling , soil water , clay soil , clay minerals , soil science , atterberg limits , expansive clay , environmental science , geology , mineralogy , geotechnical engineering , materials science , composite material
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 ( r 2 = 0.868) while the ratio of expandable clay/total clay (partial r 2 = 0.454) also significantly affects swelling. The percent of expandable clay is the single variable best correlated with COLE ( r 2 = 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.