Comparison of Coal Dust Fouled Railroad Ballast Behavior—Granite Vs. Limestone

Fouling refers to the condition of railroad ballast when voids in this unbound aggregate layer are filled with fine materials or fouling agents commonly in the form of ballast aggregate breakdown, outside contamination such as coal dust from coal trains, or from subgrade soil intrusion. Effects of coal dust on shear strength of different ballast aggregates were studied through the use of a large shear box device. The strength properties of both granite and limestone ballast samples were determined when coal dust was added to clean ballast samples at various percentages by weight of ballast under both dry and wet conditions. When the coal dust fouling percentage increased, the ballast shear strength generally decreased. Wet fouling was found to exacerbate this trend. However, coal dust had more detrimental impact on granite ballast strength when compared to limestone ballast. This could be caused by limestone’s higher crushing tendency and/or possibly any differences in void structures since gradation properties of the granite and limestone samples varied.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780415871990
• Supplemental Notes:
  • Abstract reprinted with permission of Taylor & Francis.
• Corporate Authors:

  CRC Press/Balkema

  P.O. Box 447
  2300 AK Leiden,   Netherlands 
• Authors:
  • Dombrow, William
  • Huang, Hai
  • Tutumluer, Erol
• Conference:
  • Bearing Capacity of Roads, Railways and Airfields. 8th International Conference (BCR2A'09)
  • Location: Champaign IL, United States
  • Date: 2009-6-29 to 2009-7-2
• Publication Date: 2009

Language

• English

Media Info

• Media Type: Web
• Edition: e-book ISBN 9780203865286
• Features: Figures; Photos; References; Tables;
• Pagination: pp 1349-1357
• Monograph Title: Bearing Capacity of Roads, Railways and Airfields. Proceedings of the 8th International BCR2A'09 Conference

Subject/Index Terms

• TRT Terms: Ballast (Railroads); Bearing capacity; Costs; Field tests; Freight transportation; Granite; Limestone; Maintenance; Railroad tracks; Railroad transportation; Shear strength; Subballast; Subgrade (Pavements)
• Uncontrolled Terms: Ballast fouling (Railroads); Coal dust
• Subject Areas: Freight Transportation; Maintenance and Preservation; Railroads; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 01350653
• Record Type: Publication
• ISBN: 9780415871990
• Files: TRIS
• Created Date: Aug 29 2011 2:56PM