Statistical variability of the correlation plasticity index versus liquid limit for smectite and kaolinite

Statistical variability of the correlation plasticity index versus liquid limit for smectite and... An extensive literature review has been conducted to observe the statistical correlation of the plasticity index, PI, with the liquid limit, LL, of smectite and kaolinite. Fifty-nine data for smectite and fifty-one for kaolinite have been plotted and compared to each other. The results show that PI is related to LL with eqs. PI = 0.97 × LL − 37.6 for smectite and PI = 5.94e0.023·LL for kaolinite. An independent data set was used for the validation of the proposed relationships. Besides, it was possible to identify a confidence interval for PI, relative to a certain interval for LL values, to confirm the robustness of the relations given above. The findings of this research show that the relation between the Atterberg limits is clearly controlled by the clay mineralogy and that there is no unique way to get PI from LL if the clay mineralogy is not considered. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Clay Science Elsevier

Statistical variability of the correlation plasticity index versus liquid limit for smectite and kaolinite

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier B.V.
ISSN
0169-1317
eISSN
1872-9053
D.O.I.
10.1016/j.clay.2018.02.001
Publisher site
See Article on Publisher Site

Abstract

An extensive literature review has been conducted to observe the statistical correlation of the plasticity index, PI, with the liquid limit, LL, of smectite and kaolinite. Fifty-nine data for smectite and fifty-one for kaolinite have been plotted and compared to each other. The results show that PI is related to LL with eqs. PI = 0.97 × LL − 37.6 for smectite and PI = 5.94e0.023·LL for kaolinite. An independent data set was used for the validation of the proposed relationships. Besides, it was possible to identify a confidence interval for PI, relative to a certain interval for LL values, to confirm the robustness of the relations given above. The findings of this research show that the relation between the Atterberg limits is clearly controlled by the clay mineralogy and that there is no unique way to get PI from LL if the clay mineralogy is not considered.

Journal

Applied Clay ScienceElsevier

Published: May 1, 2018

References

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