Predicting the Maximum Shear Modulus of Sands Containing Nonplastic Fines
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VIEW THE REPLYPublication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 143, Issue 9
Abstract
There are some attempts to evaluate Hardin’s equation for transition soils, i.e., sand mixed with a systematic increase of fines () content, . The most common finding is that maxmium shear modulus, , decreases with increasing , and there are attempts to capture the effect of on by considering of clean sand as a reference. These are done by (1) developing empirical relations of , , , or with ; (2) using equivalent granular void ratio, , instead of void ratio, in Hardin’s equation; and (3) using a critical state (CS) approach. This paper presents 288 resonant column data for clean Hostun sand and Hostun sand mixed with 5, 10, 20, and 30% nonplastic quartz powder. It is found that when in a pre-established Hardin equation for clean Hostun sand is replaced by , Hardin’s equation can predict for Hostun sand with with good accuracy. Only soil grading properties, e.g., and , are required as inputs to convert to . This is a significant advantage over a recently proposed CS approach which requires critical state lines (CSLs) data for each .
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Acknowledgments
The presented study has been performed within the framework of the project “Influence of stress ratio on small strain properties of sand with fines” funded by the German Research Council (DFG, Project No. SCHA 675/20-1). The authors are grateful to DFG for the financial support.
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©2017 American Society of Civil Engineers.
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Received: Sep 30, 2016
Accepted: Apr 11, 2017
Published online: Jun 30, 2017
Published in print: Sep 1, 2017
Discussion open until: Nov 30, 2017
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