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Suction Crust Infiltrometer for Measuring Hydraulic Conductivity of Unsaturated Soil Near Saturation
Author(s) -
Booltink H. W. G.,
Bouma J.,
Giménez D.
Publication year - 1991
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/sssaj1991.03615995005500020049x
Subject(s) - infiltrometer , hydraulic conductivity , saturation (graph theory) , suction , geology , infiltration (hvac) , soil science , geotechnical engineering , crust , soil water , hydrology (agriculture) , environmental science , materials science , geochemistry , mathematics , meteorology , geography , composite material , combinatorics
The laborious crust test, used to measure unsaturated hydraulic conductivity, was modified into a more operational suction crust infiltrometer. By varying the level of the mariotte tube inside the feeder burette, different negative pressure heads can be imposed on a soil sample. Unit gradient during the measurement was ensured by adjusting the water level in the draining column under the sample. Only one crust has to be produced, which leads to less disturbances and significant savings of time. Perfect contact between crust and soil surface makes the crust infiltrometer particularly suitable for measurements in structured soils with macropores