Scale and water effects on the friction angles of two granular soils with different roughness

Marzulli V, Sandeep CS, Senetakis K, Cafaro F, Pöschel T (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Powder Technology Elsevier

Book Volume: 377

Pages Range: 813-826

DOI: 10.1016/j.powtec.2020.09.060

Abstract

An integrated experimental study is presented which aims at relating the frictional properties at the particle scale to the bulk mechanical behavior for two different types of sands. We performed direct shear tests and inter-particle tests on lunar regolith simulant DNA-1A and Ottawa sand (benchmark material) under both dry and wet conditions. We found higher macroscopic friction angles for the lunar simulant in both dry and wet conditions, a smaller strength decay for Ottawa sand during reversal direct shear tests and similar strength envelopes of both materials under wet and dry conditions. Particle-scale tests evidenced higher inter-particle friction for DNA-1A in wet conditions with respect to the dry case for normal force lower than 2–3 N. For the lunar simulant, the differences between bulk and inter-particle friction appeared to be emphasized in dry condition and an evident effect of water on the friction coefficient was found only at the micro-scale.

Authors with CRIS profile

Valentina Marzulli Lehrstuhl für Multiscale Simulation of Particulate Systems (MSS) Thorsten Pöschel Lehrstuhl für Multiscale Simulation of Particulate Systems (MSS)

Involved external institutions

University of Oklahoma US United States (USA) (US) City University of Hong Kong (CityU) CN China (CN) Politecnico di Bari IT Italy (IT)

How to cite

APA:

Marzulli, V., Sandeep, C.S., Senetakis, K., Cafaro, F., & Pöschel, T. (2021). Scale and water effects on the friction angles of two granular soils with different roughness. Powder Technology, 377, 813-826. https://doi.org/10.1016/j.powtec.2020.09.060

MLA:

Marzulli, Valentina, et al. "Scale and water effects on the friction angles of two granular soils with different roughness." Powder Technology 377 (2021): 813-826.

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