Dilatancy and Shear Strength of Sand at Low Confining Pressures |
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Authors: | T Chakraborty R Salgado |
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Affiliation: | 1Ph.D. Student, School of Civil Engineering, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47907. E-mail: tchakkab@purdue.edu 2Professor, School of Civil Engineering, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47907 (corresponding author). E-mail: rodrigo@purdue.edu
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Abstract: | Sand dilates with shearing at a rate that increases with increasing relative density (DR) and decreases with increasing effective confining stress (σc′). The peak friction angle of a sand depends on its critical-state friction angle and on dilatancy. In this paper, we develop a simple correlation between peak friction angle, critical-state friction angle, and dilatancy based on triaxial compression and plane-strain compression test data for sand for a range of confining pressures from very low levels to approximately 196 kPa. |
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Keywords: | Sand Soil type Stress Dilatancy Shear strength Friction |
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