Abstract
Shear wave velocity (Vs) anisotropy of kaolinite mixed with sodium chloride (NaCl) and organic polymer (polyethylene oxide, xanthan gum, and chitosan) solutions was investigated using a custom-made floating wall consolidometer-type bender element testing system. The addition of salt and polymers influenced the microfabric anisoopy of platy kaolinite particles, thus resulted in the increment or decrement in the Vs anisotropy. The Vs of kaolinite in all three orthogonal directions increased as the NaCl concentration increased; however, the Vs anisotropy decreased. PEO and chitosan increased the Vs of kaolinite, while xanthan gum exhibited counter-effects. Vs anisotropy (Vs−hh/Vs−vh and Vs−hv/Vs−vh) of polymer amended kaolinite was found to decrease. In addition, both salt- and polymer-modified kaolinite did not show Vs cross-anisotropy.
Recommended Citation
X. Kang et al., "Shear Wave Velocity Anisotropy of Salt- and Polymer-amended Kaolinite," Acta Geotechnica, vol. 15, no. 12, pp. 3605 - 3611, Springer, Dec 2020.
The definitive version is available at https://doi.org/10.1007/s11440-020-00974-0
Department(s)
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Anisotropy; Bender element; Fabric; Kaolinite; Polymer; Salt; Shear wave velocity
International Standard Serial Number (ISSN)
1861-1133; 1861-1125
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Springer, All rights reserved.
Publication Date
01 Dec 2020
Comments
National Natural Science Foundation of China, Grant 41330641