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Micro mechanics of the critical state line at high stresses

de Bono, John P.; McDowell, Glenn R.

Authors

John P. de Bono john.debono@nottingham.ac.uk

Glenn R. McDowell glenn.mcdowell@nottingham.ac.uk



Abstract

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.

Journal Article Type Article
Publication Date Jun 1, 2018
Journal Computers and Geotechnics
Print ISSN 0266-352X
Electronic ISSN 1873-7633
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 98
APA6 Citation de Bono, J. P., & McDowell, G. R. (2018). Micro mechanics of the critical state line at high stresses. Computers and Geotechnics, 98, https://doi.org/10.1016/j.compgeo.2018.02.016
DOI https://doi.org/10.1016/j.compgeo.2018.02.016
Keywords Discrete element method; DEM; Particle crushing; Critical state line; State boundary surface
Publisher URL https://www.sciencedirect.com/science/article/pii/S0266352X18300521
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0



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