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Structural characteristics of clay-dominated soils of a marsh and a palaeosol in a crossed diagram Inra
Bernard, M.; Dudoignon, P.; Pons, Y.; Chevallier, C.; Boulay, L..
Although the shrink-swell phenomenon of clays has been thoroughly studied, the in situ relation of the shrinkage curve to the structure profile is rarely presented from the shrinkage limit to the liquid limit. We studied the consolidated structure of clay-dominated (<2 μm) soils formed on ‘pseudo-liquid’ marsh sediments in the ‘Marais de l’Ouest’ (France). The profiles were studied in a grassland field and in a sunflower field from unsaturated surface soils down to deeper, saturated, levels characterized by a very large water content (100% by weight). The consolidation states were quantified recording cone resistance (Qd) profiles using a dynamic penetrometer in successive seasons. These Qd profiles were compared with the associated wet density and...
Tipo: Journal Article Palavras-chave: SOL ARGILEUX; PALAEOSOL SHRINKAGE CURVE; CLAY-DOMINATED SOIL; MARSH.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2007b7b82730&uri=/notices/prodinra1/2010/09/
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