Influence of Non/Low-Plastic Fines and Associated Aging Effects on Liquefaction Resistance
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 138, Issue 6
Abstract
The objective of the study presented herein is the development of an understanding of the influence of non/low-plastic fines and associated aging effects on the penetration resistance () and liquefaction resistance () of sandy soils. Towards this end, the authors performed a series of cyclic triaxial tests on samples having varying relative densities () and fines contents (), wherein a miniature cone was incorporated into the triaxial apparatus. This allowed the penetration resistance and the liquefaction resistance to be determined directly for the samples. To simulate geologic aging effects, a small amount of cement was mixed in with the soil during sample preparation. From “unaged samples” without cement, it was found that although both and decrease as increases, a unique relationship exists between and that is independent of . However, from samples having the same (i.e., simulating the same geologic age), it was found that increases as increases for the same . This trend is consistent with field-based correlations for natural soil deposits to which aging effects are intrinsic. Thus, it has been clarified that it is not the -value by itself but rather the cementation effect associated with higher that results in a higher liquefaction resistance for a given .
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References
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© 2012. American Society of Civil Engineers.
History
Received: Jan 23, 2011
Accepted: Sep 7, 2011
Published online: Sep 9, 2011
Published in print: Jun 1, 2012
Published ahead of production: Jun 15, 2012
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