Articles | Volume 19, issue 9
Technical note
25 Sep 2015
Technical note |  | 25 Sep 2015

Technical Note: The use of an interrupted-flow centrifugation method to characterise preferential flow in low permeability media

R. A. Crane, M. O. Cuthbert, and W. Timms

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Cited articles

ASTM: Standard test method for determining unsaturated andsaturated hydraulic conductivity in porous media by steady-state centrifugation, ASTM D6527, West Conshohoken, PA, 2000.
ASTM: Standard practice for thin-walled tube sampling of soils for geotechnical purposes, ASTM D1587-08(2012)e1, West Conshohocken, PA, 2012.
Barnes, C. J. and Allison, G. B.: Tracing of water movement in the unsaturated zone using stable isotopes of hydrogen and oxygen, J. Hydrol., 100, 143–176, 1988.
Bashar, K. and Tellam, J. H.: Non-reactive solute movement through saturated laboratory samples of undisturbed stratified sandstone, Geological Society, London, Special Publications, 263, 233–251, 2006.
Bear, J. and Bachmat, Y.: Introduction to modeling of transport phenomena in porous media. Springer Science & Business Media, 1990.
Short summary
We present an interrupted-flow centrifugation technique to characterise the vertical hydraulic properties of dual porosity, low permeability media. Use of large core samples (100mm diameter) enables hydraulic-conductivity-scale issues in dual porosity media to be overcome. Elevated centrifugal force also enables simulating in situ total stress conditions. The methodology is an important tool to assess the ability of dual porosity aquitards to protect underlying aquifer systems.