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.
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Supplemental Notes:
- Full conference available on CD-ROM.
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Corporate Authors:
American Railway Engineering and Maintenance-of-Way Association
10003 Derekwood Lane, Suite 210
Lanham, MD United States 20706 -
Authors:
- Chrismer, S
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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