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:
  • Publication Date: 1998

Language

  • English

Media Info

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

Subject/Index Terms

Filing Info

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