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Effects of aggregate size on water retention capacity and microstructure of lime-treated silty soil
Abstract : Lime treatment is a common technique of improving the workability and geotechnical properties of soils. In this study, the aggregate size effects on the water retention capacity and microstructure of lime-treated soil were investigated. Two soil powders with different maximum aggregate sizes (D max = 0·4 and 5 mm) were prepared and stabilised by 2% lime (by weight of dry soil). Soil samples were prepared by compaction at dry side of optimum water content (w = 17%) with a dry density of 1·65 Mg/m 3. Suction and pore size distribution were determined after different curing periods. The results obtained show that: (a) the treated soil with smaller D max presents relatively smaller modal sizes and lower frequency of macropores (10–330 μm); (b) lime addition effectively improves the soil water retention capacity and decreases both the modal sizes of macro-and micropores gradually over time. Moreover, a higher air entry value and larger water retention capacity were also observed for a smaller D max value, in agreement with the pore size distributions.
Littérature citée [24 références]
https://hal-enpc.archives-ouvertes.fr/hal-01271314
Contributeur : Anh Minh Tang Connectez-vous pour contacter le contributeur
Soumis le : mardi 9 février 2016 - 09:22:30
Dernière modification le : jeudi 29 juillet 2021 - 14:48:04
Archivage à long terme le : : samedi 12 novembre 2016 - 14:26:31
Contributeur : Anh Minh Tang Connectez-vous pour contacter le contributeur
Soumis le : mardi 9 février 2016 - 09:22:30
Dernière modification le : jeudi 29 juillet 2021 - 14:48:04
Archivage à long terme le : : samedi 12 novembre 2016 - 14:26:31
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Wang et al 2015 Effects of agg...
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