TRACK SUBSTRUCTURE RESEARCH AT TTCI

Recent track substructure-related research at the Transportation Technology Center in Pueblo, Colorado, has focused on providing more durable and economic track surfacing techniques and methods of stabilizing track over soft subgrade. In a limited amount of testing, design lift tamping appears to yield a significantly longer lasting vertical track surface compared to conventional methods. This technique, used in a spot tamping mode, has been demonstrated to provide a potentially large cost savings. The 2 track stabilization techniques being tested are asphalt underlayment and Geoweb, both in the sub-ballast layer. These remedial methods will be assessed based on the improvement in stability of track geometry over a 700-foot section of track with a soft clay subgrade. Further, these tests will provide much needed information for a design approach for their use.

• Supplemental Notes:
  • Full conference available on CD-ROM.
• Corporate Authors:

  American Railway Engineering and Maintenance-of-Way Association

  10003 Derekwood Lane, Suite 210
  Lanham, MD  United States  20706
• Authors:
  • Chrismer, S
• Conference:
  • 1998 AREMA Track and Structures Conference
  • Location: Chicago, Illinois
  • Date: 1998-9-14 to 1998-9-16
• Publication Date: 1998

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 20p

Subject/Index Terms

• TRT Terms: Cost effectiveness; Design; Railroad engineering; Railroad tracks; Railroad transportation; Soft clays; Stabilized materials; Subballast; Substructures; Tamping
• Identifier Terms: Transportation Technology Center
• Geographic Terms: Pueblo (Colorado)
• Subject Areas: Design; Railroads;

Filing Info

• Accession Number: 00796045
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 21 2000 12:00AM