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Enhanced isothermal effect on swelling pressure of compacted MX80 bentonite

Tripathy, Snehasis, Bag, Ramakrishna and Thomas, Hywel Rhys 2015. Enhanced isothermal effect on swelling pressure of compacted MX80 bentonite. In: 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: 04 Jun 2017 06:47
URI: http://orca.cf.ac.uk/id/eprint/64871

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