Enhanced isothermal effect on swelling pressure of compacted MX80 bentonite

Tripathy, Snehasis ORCID: https://orcid.org/0000-0003-1632-7668, Bag, Ramakrishna and Thomas, Hywel Rhys ORCID: https://orcid.org/0000-0002-3951-0409 2015. Enhanced isothermal effect on swelling pressure of compacted MX80 bentonite. Lollino, Georgio, Giordan, Daniele, Thuro, Kurosch, Carranza-Torres, Carlos, Wu, Faquan, Marinos, Paul and Delgado, Carlos, eds. Engineering Geology for Society and Territory: Volume 6, Vol. 6. Springer, pp. 537-539. (10.1007/978-3-319-09060-3_96)

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Abstract

Laboratory isothermal swelling pressure tests were carried out on compacted MX80 bentonite at 25 and 70 °C with distilled water as the hydrating fluid. Assessment of the swelling pressure was carried out using the electrical triple-layer theory for interacting clay platelets. An increase in the temperature reduced the swelling pressure of the bentonite on account of decrease in the Gouy-layer charge, mid-plane potential and distance functions. Agreements between the calculated swelling pressures from the triple-layer theory and the experimental results were found to be reasonable for compaction dry densities of less than 1.45 Mg/m3.

Item Type:	Book Section
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Publisher:	Springer
ISBN:	9783319090597
Last Modified:	27 Oct 2022 09:13
URI:	https://orca.cardiff.ac.uk/id/eprint/64871

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