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Water retention model for compacted bentonites

Dieudonne, Anne-Catherine ; Della Vecchia, Gabriele ; Charlier, Robert

Canadian geotechnical journal, 2017-07, Vol.54 (7), p.915-925 [Periódico revisado por pares]

Ottawa: NRC Research Press

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Título:
Water retention model for compacted bentonites
Autor: Dieudonne, Anne-Catherine ; Della Vecchia, Gabriele ; Charlier, Robert
Assuntos: Adsorption ; Aggregates ; Behavior ; Bentonite ; bentonites compactées ; Calibration ; Capillarity ; Civil engineering ; compacted bentonites ; Compacting ; Density ; Drying ; Engineering, computing & technology ; Experimental data ; Fabrics ; Frameworks ; Ingénierie civile ; Ingénierie, informatique & technologie ; Mathematical models ; microstructure ; modèle de rétention d’eau ; Parameters ; Preliminary designs ; Properties ; Retention ; Soil ; Soil compaction ; Soil research ; Soil suction ; Soils ; sols non saturés ; unsaturated soils ; Water ; water retention model
É parte de: Canadian geotechnical journal, 2017-07, Vol.54 (7), p.915-925
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
scopus-id:2-s2.0-85021650174
Descrição: The water retention behaviour of compacted bentonites is strongly affected by multi-physical and multi-scale processes taking place in these materials. Experimental data have evidenced major effects of the material dry density, the imposed volume constraints, and the soil fabric. This paper presents a new water retention model accounting for proper retention mechanisms in each structural level of compacted bentonites, namely adsorption in the intra-aggregate pores and capillarity in the inter-aggregate ones. The model is calibrated and validated against experimental data on different bentonite-based materials, showing good capabilities in capturing the main features of the behaviour. The model is able to reproduce experimental data on compacted bentonites over a wide range of suction values, within a unified framework, and using a limited number of parameters. Some of the parameters introduced are shown to take approximately the same value for several bentonites, providing a significant basis for preliminary design when dedicated experiments are missing.
Editor: Ottawa: NRC Research Press
Idioma: Inglês

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Water retention model for compacted bentonites

Dieudonne, Anne-Catherine ; Della Vecchia, Gabriele ; Charlier, Robert

Ottawa: NRC Research Press

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