Strength and Dilatancy of Silty Sand
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 140, Issue 7
Abstract
Fines content can have a great influence on the mechanical behavior of sand. The effect of fines content has not been taken into account in most of the strength-dilatancy relationships for sand. An attempt was made in this paper to account for the influence of fines content on the strength-dilatancy relationship of silty sands. The test data on Ottawa sands with nonplastic fines were reanalyzed to examine the strength and dilatancy relationship for silty sand with different fines contents. The ratio of excess angle (which is the difference between the peak friction angle and the critical state friction angle) to the relative dilatancy index was found to be a function of fines content. Furthermore, a strength-dilatancy relationship was also modified to account for the influence of confining pressure on the strength-dilatancy relationship of silt sands.
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Acknowledgments
The authors acknowledge financial support from the 111 Project (Grant No. B13024), the Program for Changjiang Scholars and Innovative Research Team in University (Grant No. IRT1125), the Project supported by the National Natural Science Foundation of China (Grant No. 51379067), and the Fundamental Research Funds for the Central Universities (Grant No. 2011B14514).
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 140 • Issue 7 • July 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Sep 24, 2013
Accepted: Mar 26, 2014
Published online: Apr 17, 2014
Published in print: Jul 1, 2014
Discussion open until: Sep 17, 2014
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