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Investigating the micro mechanics of cemented sand using DEM

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

Authors

Dariusz Wanatowski



Abstract

The discrete element method has been used to investigate the micro mechanics of cemented sand. High pressure drained triaxial tests are modelled in 3D using a flexible membrane which allows the correct deformation to develop. Simulations with up to 12 MPa confining pressure are presented, which are compared with laboratory experiments on a sand with a range of cement contents. Cementation is modelled using ‘parallel bonds’, and various parameters and strength distributions are investigated. Varying levels of cementation are successfully modelled, with the correct qualitative behaviour observed, and the separate effects of cementation and confining pressures demonstrated. The triaxial behaviour is found to be highly influenced by the distribution of bond strengths.

Journal Article Type Article
Publication Date Apr 25, 2015
Journal International Journal for Numerical and Analytical Methods in Geomechanics
Print ISSN 0363-9061
Electronic ISSN 1096-9853
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 39
Issue 6
APA6 Citation de Bono, J. P., McDowell, G. R., & Wanatowski, D. (2015). Investigating the micro mechanics of cemented sand using DEM. International Journal for Numerical and Analytical Methods in Geomechanics, 39(6), https://doi.org/10.1002/nag.2340
DOI https://doi.org/10.1002/nag.2340
Keywords discrete element method; cemented sand; triaxial
Publisher URL http://onlinelibrary.wiley.com/doi/10.1002/nag.2340/abstract
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information This is the peer reviewed version of the following article: "Investigating the micro mechanics of cemented sand using DEM", 2015, de Bono, J.P.; McDowell, G.R.; Wanatowski, D. International Journal for Numerical and Analytical Methods in Geomechanics 39(6) 655-675, which has been published in final form at: http://onlinelibrary.wi...1002/nag.2340/abstract.
This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving."

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf



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