EXPERIMENTS ON THE SETTING OF RAILWAY BALLAST UNDER REPETITION OF LOAD

Four types of ballast were laid a top 30 cm layer entirely composed of standard crushed stone; upper 20 cm composed of crushed stone and lower 10 cm of standard screened gravel; upper 10 cm of crushed stone and lower 20 cm of screened gravel; and 30 cm entirely composed of screened gravel. Comparison between the Grade 1 crushed stone with size distribution as produced and the one with size distribution modified by screening to 30 to 50 mm indicated that the setting rate of the ballast composed of the latter was 21% slower than that of the one of the former. Comparison between the wooden and the concrete ties used in the experiment with reference to both types of ballast revealed that the ballast setting under concrete ties was 50% less than under wooden ones. A ballast of screened gravel with coarse sand fillings was compared with the one of the same material minus sand. It was found that the setting rate of the former was very much slower than that of the latter; it means that good stability will be gained if the cavities are well filled.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3127232
• Corporate Authors:

  JAPANESE NATIONAL RAILWAYS

  TOKYO,   Japan 
• Authors:
  • SATO, Y
• Publication Date: 1960-9

Media Info

• Pagination: p. 75
• Serial:
  • Railway Technical Research Institute, Quarterly Reports
  • Volume: 1
  • Issue Number: 3
  • Publisher: Railway Technical Research Institute/Tetsudo Gijutsu Kenkyujo
  • ISSN: 0033-9008
  • Serial URL: http://www.rtri.or.jp/eng/

Subject/Index Terms

• TRT Terms: Ballast (Railroads); Compaction; Concrete; Concrete ties; Dynamic loads; Railroad ties; Railroad tracks; Soil compaction; Structural design; Technology; Wood ties
• Uncontrolled Terms: Ballast; Track design
• Geographic Terms: Japan
• Old TRIS Terms: Wooden cross ties
• Subject Areas: Geotechnology; Railroads;

Filing Info

• Accession Number: 00040556
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 8 1994 12:00AM