Hakimi, Aziz U;
Singh, Saurabh;
Baudet, Béatrice A;
Coop, Matthew R;
(2024)
An Investigation of the Micro-Mechanical Contact Behaviour of Railway Ballast Particles.
In:
Proceedings of the 2025 IOP Conference Series: Earth and Environmental Science.
(pp. 012020).
IOP Publishing Ltd: Grenoble, France.
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Abstract
IOP Science home Accessibility Help IOP Conference Series: Earth and Environmental Science Purpose-Led Publishing, find out more. Paper • The following article isOpen access An Investigation of the Micro-Mechanical Contact Behaviour of Railway Ballast Particles Aziz U Hakimi, Saurabh Singh, Béatrice A. Baudet and Matthew R. Coop Published under licence by IOP Publishing Ltd IOP Conference Series: Earth and Environmental Science, Volume 1480, TC 105 International Symposium 23/09/2024 - 27/09/2024 Grenoble, France Citation Aziz U Hakimi et al 2025 IOP Conf. Ser.: Earth Environ. Sci. 1480 012020 DOI 10.1088/1755-1315/1480/1/012020 DownloadArticle PDF Authors References Article metrics 101 Total downloads Share this article Article information Abstract The micromechanical behaviour of basalt ballast particles was studied by subjecting them to normal (N) and tangential loading (T) under various loads. It is observed that the natural ballast particle pairs subjected to normal loading have a softer response than that predicted by Hertz (1882) theory. The coefficient of interparticle friction (μ), measured during monotonic shearing, is about 0.5-0.6, while during cyclic loading, μ was found to stabilise around 0.65-0.85 after about 30 cycles. The value of μ was not affected by the normal load or the loading rate. Roughness, measured before and after testing, was found to change with loading, attributed to deformation of the asperities.
| Type: | Proceedings paper |
|---|---|
| Title: | An Investigation of the Micro-Mechanical Contact Behaviour of Railway Ballast Particles |
| Event: | IS Grenoble 2024 Geomechanics from Micro to Macro |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1755-1315/1480/1/012020 |
| Publisher version: | https://doi.org/10.1088/1755-1315/1480/1/012020 |
| Language: | English |
| Additional information: | © The Author(s), 2025. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. https://creativecommons.org/licenses/by/4.0/ Published under licence by IOP Publishing Ltd |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10193484 |
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