Undrained cyclic behavior of bentonite-sand mixtures and factors affecting it

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Title Undrained cyclic behavior of bentonite-sand mixtures and factors affecting it
Author Gratchev, Ivan; Sassa, Kyoji; Osipov, Viktor Ivanovich; Fukuoka, Hiroshi; Wang, Gonghui
Journal Name Geotechnical and Geological Engineering
Year Published 2007
Place of publication Netherlands
Publisher Springer
Abstract In this work, the cyclic behavior of bentonite–sand mixtures and factors affecting it were studied by means of a ring-shear apparatus and a scanning electron microscope. It was found that bentonite content had a significant influence on the liquefaction potential of the studied soils. A small amount of bentonite in the mixtures would cause the formation of “loose” microstructures, resulting in the occurrence of rapid liquefaction under cyclic loading, while a high bentonite content would cause the formation of clay matrixes, thus raising the soil resistance to liquefaction. In addition, the effect of pore water chemistry on the cyclic behavior of a high plasticity bentonite–sand mixture was carefully examined. It was also found that the presence of ions in pore water would change the clay microfabric, making it more open and thus more vulnerable to liquefaction. Finally, the effects of loading frequency on the cyclic behavior of mixtures with different amounts of bentonite were investigated. It was found that as the bentonite content increased, the influence became more pronounced.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1007/s10706-006-9115-2
Volume 25
Issue Number 3
Page from 349
Page to 367
ISSN 0960-3182
Date Accessioned 2010-11-05
Language en_AU
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Civil Geotechnical Engineering
URI http://hdl.handle.net/10072/38864
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1x

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