Shear strength, interparticle locking, and dilatancy of granular materials

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Three-dimensional sphericity, roundness and fractal dimension of sand particles (2018, background): “…the macroscopic mechanical properties of sands, such as their compressibility, shear strength, crushability and critical state behaviour, are highly influenced by the morphological features of the particles (Guo & Su, 2007; Rousé et al., 2008; Tsomokos & Georgiannou, 2010; Altuhafi & Coop, 2011).”
Generation of a realistic 3D sand assembly using X‐ray micro‐computed tomography and spherical harmonic‐based principal component analysis (2017, background): “Geotechnical engineering studies have shown that complex shapes and textures greatly enhance the inter-locking force between particles, and this in turn increases the macroscopic shear strength and dilatancy of the sand [1, 2].”
Micromorphology characterization and reconstruction of sand particles using micro X-ray tomography and spherical harmonics (2015, background): “…the macroscopic mechanical properties of sands, such as the shear strength, dilatancy, crushability, and shear-induced localization, are highly influenced by the inherent fabric and shape of the particle (Coop et al., 2004; Guo and Su, 2007; Tsomokos and Georgiannou, 2010; Fityus et al., 2013).”