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Swelling pressure-suction relationship of heavily compacted bentonite-sand mixtures

Agus, Setianto Samingan, Arifin, Yulian Firmana, Tripathy, Snehasis and Schanz, Tom 2013. Swelling pressure-suction relationship of heavily compacted bentonite-sand mixtures. Acta Geotechnica 8 (2) , pp. 155-165. 10.1007/s11440-012-0189-0

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Abstract

This paper presents results of an experimental work to determine a relationship between swelling pressure and suction of heavily compacted bentonite–sand mixtures. For comparison, tests were also carried out on heavily compacted bentonite specimens. A series of swelling pressure tests were performed using multi-step constant-volume method where suction of the specimens tested was reduced in a stepwise manner toward a zero value. The This paper presents results of an experimental work to determine a relationship between swelling suction reduction was induced using vapor equilibrium and axis-translation techniques. It is shown that compacted specimens did not exhibit any collapse upon suction decrease and exhibited maximum swelling pressures at zero-equilibrium suction. The development of swelling pressure with decreasing suction of the specimens showed threshold suctions below which a further reduction in suction yields an increase in the swelling pressure of the same magnitude. The magnitude of threshold suction was found to be a function of bentonite content in compacted specimens.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Publisher: Springer Verlag
ISSN: 1861-1125
Last Modified: 04 Jun 2017 05:16
URI: http://orca-mwe.cf.ac.uk/id/eprint/50203

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