Research Article
Jun 1980
Water Retention Measurement for Soils
Authors: Charles Su and Royal H. Brooks, M.ASCEAuthor Affiliations
Publication: Journal of the Irrigation and Drainage Division
Volume 106, Issue 2
Abstract
A method for rapidly obtaining water retention data for soils is presented. A variation of the Richard's pressure cell is used in which equilibrium at a particular water content is achieved by adjustment of the outflow pressure, rather than by permitting equilibrium to be reached at a fixed increment of water pressure. On the wetting cycle, water is added directly to the sample rather than being imbibed through the capillary barrier. The result is that data on both wetting and drying cycles can be obtained in a small fraction of the time needed for conventional procedures. Consistent data which fit on a smooth curve have been obtained. The results are thought to be comparable to those determined by the Richards procedure except, possibly, in a range of water contents greater than that at which an interconnected air phase exists.
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Published In
Journal of the Irrigation and Drainage Division
Volume 106 • Issue 2 • June 1980
Pages: 105 - 112
Copyright
© 1980 American Society of Civil Engineers.
History
Published in print: Jun 1980
Published online: Feb 11, 2021
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Authors
Affiliations
Charles Su
Prof., Dept. of Hydr. Engrg., Feng Chia Coll., Taichung, Taiwan; formerly, Grad. Research Asst., Oregon State Univ., Corvallis, Oreg.
Royal H. Brooks, M.ASCE
Prof., Agr. Engrg., Oregon State Univ., Corvallis, Oreg.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.