Iris Publishers - World Journal of Agriculture and Soil Science (WJASS)
Infiltration and Swelling Under Capillary Flow
Authorized by Robert R Wells
The
theory of water movement in swelling soils has experienced significant change
since Haines, in 1923, first explored the relationships of expansion and
subsidence. The present work deals with the swelling associated with the upward
movement of water into an initially air-dry clay soil. The movement of the
wetting front, cumulative imbibition, and change in sample height are shown to
be linear functions of the square root of time. A linear piecewise model is
used to estimate the change in the volume fraction of the solid resulting from
an increase in the moisture content: relationships between θ and z, and ϑ and m
result.
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