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Vertical porosity profile of a clay-rich marsh soil Inra
Dudoignon, P.; Causseque, S.; Bernard, V.; Hallaire, V.; Pons, Y..
The evolution of clay soil porosity is currently demonstrated via the shrinkage curves in a large water content domain spreading from a shrinkage limit to a liquidity limit. In fact, the parallel between in situ profiles and the shrinkage curves in such a large water content range is difficult to obtain because of the lack of earth pressure in the laboratory tests and in situ limited water contents. The vertical distribution of porosity throughout a clay-rich marsh soil profile was studied in a grassland field with samples taken from the soil surface characterized by water contents near their shrinkage limit down to 2.00 m deep saturated sediments over their liquidity limit. The depth of the plasticity limit isolates a soil in a solid state characterized...
Tipo: Journal Article Palavras-chave: SOL; POROSITE; EAU; ANALYSE D'IMAGE CLAY SOIL; SHRINKAGE CURVES; IMAGE ANALYSIS; POROSITY.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200928b853f9&uri=/notices/prodinra1/2010/09/
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