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ANALYSIS OF ONE‐DIMENSIONAL STEADY FLOW IN CONSTRAINED SWELLING SOILS
Author(s) -
TOWNER G. D.
Publication year - 1978
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1978.tb02044.x
Subject(s) - hydraulic conductivity , soil water , water content , flow (mathematics) , geotechnical engineering , mechanics , volumetric flow rate , steady state (chemistry) , water flow , soil science , mathematics , thermodynamics , swelling , geology , materials science , chemistry , physics , composite material
Summary The relation between the steady‐state flow rate in horizontal columns of swelling soils and the pressure difference applied across the ends is derived for small flow rates. The slope of the curve representing the relationship at zero flow rate gives the value of the hydraulic conductivity corresponding to the initial water content (and hence to the average water content). The result is valid for hysteretic systems. The curves are concave to the pressure axis for published moisture characteristics. However, they can be convex for characteristics of a form that has not been reported but which does not violate known physical laws. A particular hydraulic conductivity/water content relationship leads to linear curves.