Micro mechanics of the critical state line at high stresses

de Bono, John P. and McDowell, Glenn R. (2018) Micro mechanics of the critical state line at high stresses. Computers and Geotechnics, 98 . pp. 181-188. ISSN 1873-7633

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A critical state line is presented for a crushable numerical soil, which is parallel to the isotropic normal compression line. A previous theory for the normal compression line, which correctly predicts the slope as a function of the size-effect on particle strength is extended to justify the slope of the critical state line. The micro mechanics behind critical states are examined, leading to a theory for a relationship between the volume of smallest particles and mean effective stress. A unique relationship exists for crushed states, leading to a two-dimensional interpretation of the state boundary surface for soils looser than critical.

Item Type: Article
RIS ID: https://nottingham-repository.worktribe.com/output/935646
Keywords: Discrete element method; DEM; Particle crushing; Critical state line; State boundary surface
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Civil Engineering
Identification Number: https://doi.org/10.1016/j.compgeo.2018.02.016
Depositing User: Eprints, Support
Date Deposited: 22 Feb 2018 11:27
Last Modified: 04 May 2020 19:38
URI: https://eprints.nottingham.ac.uk/id/eprint/49940

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