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Soil Hydraulic Conductivity as Affected by Sodic Water
Author(s) -
Yaron Bruno,
Thomas Grant W.
Publication year - 1968
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr004i003p00545
Subject(s) - hydraulic conductivity , soil science , sodium , conductivity , sodic soil , soil water , curvilinear coordinates , materials science , geotechnical engineering , mineralogy , chemistry , geology , mathematics , geometry , metallurgy
The hydraulic conductivities of soil‐glass bead mixtures in columns were determined during the flow of dilute sodium‐calcium solutions through the mixtures. Flow was continued until equilibrium was achieved. A curvilinear decrease in hydraulic conductivity was found as the exchangeable sodium approached equilibrium. The shape of the curve depended on the nature of the soil and the cationic composition and total salt content of the solutions. The hydraulic conductivity became constant only when a constant exchangeable sodium content was achieved along the soil column. A semiempirical method of predicting the hydraulic conductivity was developed. Agreement between calculated and observed values was found to be reasonably good.