What is it about?

A series of large-scale direct shear tests is carried out on geogrid-subballast assemblies to investigate how much improvement in shear strength by the inclusion of geogrids. Numerical simulation using Discrete Element Method is carried out to study the geogrid-subballast interface in micro-mechanical perspective.

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Why is it important?

This study provides scientific quantification and evidences on the use of geogrids to improve the performance of railway sub-ballast/ballast

Perspectives

The proposed discrete element model (DEM) can be used for other applications/materials.

Dr Trung Ngo
University of Wollongong

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This page is a summary of: A study of the geogrid–subballast interface via experimental evaluation and discrete element modelling, Granular Matter, July 2017, Springer Science + Business Media,
DOI: 10.1007/s10035-017-0743-4.
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