Open Access Research Article

Infiltration and Swelling Under Capillary Flow

Robert R Wells*

United States Department of Agriculture, Agricultural Research Service, National Sedimentation Laboratory, USA

Corresponding Author

Received Date: September 28, 2019;  Published Date: October 04, 2019

Abstract

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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