Articles | Volume 9, issue 6
Earth Surf. Dynam., 9, 1531–1543, 2021
https://doi.org/10.5194/esurf-9-1531-2021
Earth Surf. Dynam., 9, 1531–1543, 2021
https://doi.org/10.5194/esurf-9-1531-2021

Research article 06 Dec 2021

Research article | 06 Dec 2021

Breaking down chipping and fragmentation in sediment transport: the control of material strength

Sophie Bodek and Douglas J. Jerolmack

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Cited articles

Adams, J.: Wear of unsound pebbles in river headwaters, Science, 203, 171–172, 1979. a, b
Anderson, R. S.: Erosion profiles due to particles entrained by wind: Application of an eolian sediment-transport model, Geol. Soc. Am. Bull., 97, 1270–1278, 1986. a
Arabnia, O. and Sklar, L. S.: Experimental study of particle size reduction in geophysical granular flows, Int. J. Erosion Control Eng., 9, 122–129, 2016. a, b
Åström, J., Linna, R., Timonen, J., Møller, P. F., and Oddershede, L.: Exponential and power-law mass distributions in brittle fragmentation, Phys. Rev. E, 70, 026104, https://doi.org/10.1103/PhysRevE.70.026104, 2004. a
Atkinson, B. K.: Subcritical crack growth in geological materials, J. Geophys. Res.-Sol. Ea., 89, 4077–4114, 1984. a, b, c
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Short summary
As rocks are transported, they undergo two attrition mechanisms: chipping, shallow cracking at low collision energies; and fragmentation, significant fracture growth from high-energy impacts. We examine the mass and shape evolution of concrete particles in a rotating drum to experimentally delineate the boundary between chipping and fragmentation. By connecting the mechanics of these attrition processes to resulting shape evolution, we can use particle shape to infer past transport conditions.