Laboratory validation of coal dust fouled ballast discrete element model

Hai Huang, Erol Tutumluer, Youssef M.A. Hashash, Jamshid Ghaboussi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Fouling refers to the condition of railroad ballast when voids in this unbound aggregate layer are filled with relatively finer materials or fouling agents commonly from the ballast aggregate breakdown, outside contamination, or from subgrade soil intrusion. When ballast gets fouled, this unbound layer may not adequately serve its primary functions to provide drainage and structural support under the repeated loading applied by trains. Coal dust fouling has been identified as one of the most critical fouling scenarios as it significantly decreases the strength and stability of railroad ballast. A Discrete Element Modeling (DEM) approach was adopted in this study to investigate the coal dust fouled ballast performances. A DEM program BLOKS3D was used to employ realistic three-dimensional polyhedrons as discrete elements generated through digital imaging of aggregate particles. An appropriate DEM model parameter calibration process was carried out to predict both the clean ballast condition and the partially to fully coal dust fouled ballast behavior as obtained from laboratory shear box tests, which properly validated the BLOKS3D DEM simulations.

Original languageEnglish (US)
Title of host publicationPaving Materials and Pavement Analysis - Proceedings of the 2010 GeoShanghai International Conference
Pages305-313
Number of pages9
Edition203 GSP
DOIs
StatePublished - Sep 3 2010
Event2010 GeoShanghai International Conference - Paving Materials and Pavement Analysis - Shanghai, China
Duration: Jun 3 2010Jun 5 2010

Other

Other2010 GeoShanghai International Conference - Paving Materials and Pavement Analysis
CountryChina
CityShanghai
Period6/3/106/5/10

Fingerprint

Coal dust
Fouling
fouling
coal
dust
Railroads
modeling
subgrade
void
Drainage
train
Contamination
Calibration
drainage
calibration
Soils
Imaging techniques
laboratory
Computer simulation
simulation

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

Cite this

Huang, H., Tutumluer, E., Hashash, Y. M. A., & Ghaboussi, J. (2010). Laboratory validation of coal dust fouled ballast discrete element model. In Paving Materials and Pavement Analysis - Proceedings of the 2010 GeoShanghai International Conference (203 GSP ed., pp. 305-313) https://doi.org/10.1061/41104(377)37
Huang, Hai ; Tutumluer, Erol ; Hashash, Youssef M.A. ; Ghaboussi, Jamshid. / Laboratory validation of coal dust fouled ballast discrete element model. Paving Materials and Pavement Analysis - Proceedings of the 2010 GeoShanghai International Conference. 203 GSP. ed. 2010. pp. 305-313
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Huang, H, Tutumluer, E, Hashash, YMA & Ghaboussi, J 2010, Laboratory validation of coal dust fouled ballast discrete element model. in Paving Materials and Pavement Analysis - Proceedings of the 2010 GeoShanghai International Conference. 203 GSP edn, pp. 305-313, 2010 GeoShanghai International Conference - Paving Materials and Pavement Analysis, Shanghai, China, 6/3/10. https://doi.org/10.1061/41104(377)37

Laboratory validation of coal dust fouled ballast discrete element model. / Huang, Hai; Tutumluer, Erol; Hashash, Youssef M.A.; Ghaboussi, Jamshid.

Paving Materials and Pavement Analysis - Proceedings of the 2010 GeoShanghai International Conference. 203 GSP. ed. 2010. p. 305-313.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Huang H, Tutumluer E, Hashash YMA, Ghaboussi J. Laboratory validation of coal dust fouled ballast discrete element model. In Paving Materials and Pavement Analysis - Proceedings of the 2010 GeoShanghai International Conference. 203 GSP ed. 2010. p. 305-313 https://doi.org/10.1061/41104(377)37