Wetting characteristics of compacted bentonites at large applied suctions

Bennett, Claire, Tripathy, Snehasis ORCID: https://orcid.org/0000-0003-1632-7668 and Thomas, Hywel Rhys ORCID: https://orcid.org/0000-0002-3951-0409 2012. Wetting characteristics of compacted bentonites at large applied suctions. Mancuso, Claudio, Jommi, Cristina and D'Onza, Francesca, eds. Unsaturated Soils: Research and Applications, Vol. 1. Heidelberg: Springer-Verlag, pp. 229-234. (10.1007/978-3-642-31116-1_31)

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Abstract

The wetting suction-water content soil-water characteristic curves of two bentonites (MX80 and Yellow) were experimentally established using vapour equilibrium technique for a suction range of 3.0 to 300.0 MPa. Compacted bentonites specimens were prepared by statically compacting bentonite powder at targeted densities of 1.2, 1.3, and 1.4 Mg/m3. The bentonite specimens still within the specimen rings were equilibrated at several relative humidities in test desiccators at zero applied stress. The test results clearly showed that the influence of compaction dry density on the wetting characteristics of the bentonites was insignificant for the entire range of suction considered. On the other hand, the chemical properties of the bentonites influenced the equilibrium water contents.

Item Type:	Book Section
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Publisher:	Springer-Verlag
ISBN:	9783642311154
Last Modified:	24 Oct 2022 12:02
URI:	https://orca.cardiff.ac.uk/id/eprint/50216

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