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Conference Paper: On the physical meaning of equivalent skeleton void ratio for granular soil with fines
Title | On the physical meaning of equivalent skeleton void ratio for granular soil with fines |
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Authors | |
Keywords | discrete element method Equivalent skeleton void ratio fines granular soil |
Issue Date | 2013 |
Publisher | American Institute of Physics. The Journal's web site is located at http://proceedings.aip.org/ |
Citation | The 7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013, Sydney, New South Wales, Australia, 8 -12 July 2013. In AIP Conference Proceedings, 2013, v. 1542 n. 1, p. 257-260 How to Cite? |
Abstract | Recent research on the behavior of silty sand usually involves the use of equivalent skeleton void ratio to characterize its packing density state. The equivalent skeleton void ratio is a modified void ratio by the introduction of a parameter b to account for the participation of fines in the force chains. However, the parameter b is poorly understood. This paper presents an investigation into the physical meaning of the equivalent skeleton void ratio by conducting a series of discrete element method (DEM) simulations on biaxial tests of assemblies of coarse and fine particles. The simulation results reveal that the parameter b is a state variable dependent on confining pressure, packing density and particle gradation and it varies during shearing. It should not be treated as a constant as reported in the literature. It is also found that the distribution pattern of fine particles in the skeleton of the assembly plays a crucial role in the overall macroscopic response. Contraction is principally induced by the movement of fine particles out of the force chains and dilation is generally involved with the migration of fine particles into forces chains. Furthermore, a new expression of the equivalent skeleton void ratio is put forward with the introduction of the parameter d to take into account the absence of large particles from force chains, along with comparisons between this new definition for the equivalent skeleton void ratio and the existing one. © 2013 AIP Publishing LLC |
Persistent Identifier | http://hdl.handle.net/10722/190253 |
ISSN | 2023 SCImago Journal Rankings: 0.152 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Dai, B | en_US |
dc.contributor.author | Yang, J | en_US |
dc.date.accessioned | 2013-09-17T15:16:56Z | - |
dc.date.available | 2013-09-17T15:16:56Z | - |
dc.date.issued | 2013 | en_US |
dc.identifier.citation | The 7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013, Sydney, New South Wales, Australia, 8 -12 July 2013. In AIP Conference Proceedings, 2013, v. 1542 n. 1, p. 257-260 | - |
dc.identifier.issn | 0094-243X | - |
dc.identifier.uri | http://hdl.handle.net/10722/190253 | - |
dc.description.abstract | Recent research on the behavior of silty sand usually involves the use of equivalent skeleton void ratio to characterize its packing density state. The equivalent skeleton void ratio is a modified void ratio by the introduction of a parameter b to account for the participation of fines in the force chains. However, the parameter b is poorly understood. This paper presents an investigation into the physical meaning of the equivalent skeleton void ratio by conducting a series of discrete element method (DEM) simulations on biaxial tests of assemblies of coarse and fine particles. The simulation results reveal that the parameter b is a state variable dependent on confining pressure, packing density and particle gradation and it varies during shearing. It should not be treated as a constant as reported in the literature. It is also found that the distribution pattern of fine particles in the skeleton of the assembly plays a crucial role in the overall macroscopic response. Contraction is principally induced by the movement of fine particles out of the force chains and dilation is generally involved with the migration of fine particles into forces chains. Furthermore, a new expression of the equivalent skeleton void ratio is put forward with the introduction of the parameter d to take into account the absence of large particles from force chains, along with comparisons between this new definition for the equivalent skeleton void ratio and the existing one. © 2013 AIP Publishing LLC | - |
dc.language | eng | en_US |
dc.publisher | American Institute of Physics. The Journal's web site is located at http://proceedings.aip.org/ | - |
dc.relation.ispartof | AIP Conference Proceedings | en_US |
dc.rights | Copyright 2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in AIP Conference Proceedings, 2013, v. 1542 n. 1, p. 257-260 and may be found at https://doi.org/10.1063/1.4811916 | - |
dc.subject | discrete element method | - |
dc.subject | Equivalent skeleton void ratio | - |
dc.subject | fines | - |
dc.subject | granular soil | - |
dc.title | On the physical meaning of equivalent skeleton void ratio for granular soil with fines | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Dai, B: daibbing@hku.hk | en_US |
dc.identifier.email | Yang, J: junyang@hkucc.hku.hk | en_US |
dc.identifier.authority | Yang, J=rp00201 | en_US |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1063/1.4811916 | - |
dc.identifier.scopus | eid_2-s2.0-84880709287 | - |
dc.identifier.hkuros | 221242 | en_US |
dc.identifier.hkuros | 236363 | - |
dc.identifier.volume | 1542 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 257 | - |
dc.identifier.epage | 260 | - |
dc.identifier.isi | WOS:000321003200059 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0094-243X | - |