Abstract
River sand is a naturally occurring conventional construction material, which has good frictional properties. Due to a steep rise in the construction activities all over the world, natural sand resources are getting depleted. This has favored / forced the construction industry in general and geotechnical engineering practice in particular to go for manufactured sands (M-sands). This necessitates a proper understanding of the frictional characteristics of M–sands. In this technical note, the results from a comparative study of the friction angles of river sand and M-sand with reference to the effect of grain size, grain angularity, dry density and gradation are reported. It is shown that M-sand exhibits higher friction angles than river sand at minimum density levels and river sand exhibits higher friction angles than M-sand at maximum density levels, on average, irrespective of grain size. It is also shown that poorly graded M-sands exhibit higher friction angles than well graded M-sands at minimum density levels, whereas well graded river sands have higher friction angles than poorly graded river sands irrespective of density levels.
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The authors acknowledge the assistance of Mr. K.S. Manish received during the experimental work.
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Prakash, K., Sridharan, A., Manoj, N. et al. Friction Angles of Sands: An Appraisal. Geotech Geol Eng 41, 4865–4872 (2023). https://doi.org/10.1007/s10706-023-02548-9
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DOI: https://doi.org/10.1007/s10706-023-02548-9