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Title: PERMANENT-DEFORMATION BEHAVIOR OF RAILWAY BALLAST
Accession Number: 00300674
Record Type: Component
Availability: Find a library where document is available Abstract: Ballast materials were tested in the triaxial apparatus by using a repeated deviator stress and a constant confining pressure. Permanent deformation (plastic) characteristics at several stress levels were determined for a variety of types and gradations of material. Correlation analyses were made between the plastic response and the results of standard material-characterization tests. The results indicate that the most important factor influencing the repeated-load plastic-strain behavior of ballast is the degree of compaction. The stress level was also found to be an important factor; there was some indication that permanent deformation was less for the more nearly well graded specimens. Finally, unlike the resilient response, the permanent-deformation behavior of ballast is dependent on loading history.
Supplemental Notes: Publication of this paper sponsored by Committee on Track Structure System Design. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
Monograph Title: Monograph Accession #: 01411530
Authors: Knutson, Reid MThompson, Marshall RPagination: pp 47-53
Publication Date: 1978
Serial: ISBN: 030902840X
Media Type: Print
Features: References
(13)
; Tables
(4)
TRT Terms: Old TRIS Terms: Subject Areas: Bridges and other structures; Geotechnology; Highways; Railroads
Files: TRIS, TRB
Created Date: Sep 29 1979 12:00AM
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