Geotechnical fabrics were found to have considerable potential for improvement of railway track structure performance. Primary benefits are expected from material separation, preventing subgrade intrusion and/or subballast fines pumping, and from lateral restraint of ballast under train loads. Further research is necessary to establish and define the presence of membrane-type action by geotechnical fabric in railway track structures. Further research also will be necessary to determine the exact conditions under which drainage in the plane of the fabric, observed for some nonwoven geotechnical fabrics, is desirable. The state-of-the-art in analysis, design, and construction of fabric-reinforced vertical retaining walls and embankments on soft foundation was found to be satisfactory for immediate railroad industry use, should these concepts be applicable in specific situations. Development of use- oriented test methods to measure fabric separation ability and the increase in ballast deformation modulus caused by use of geotechnical fabric are recommended, as is a detailed review of currently available fabric test methods, to determine the applicability to railroad operations.

  • Corporate Authors:

    Oklahoma State University, Stillwater

    Department of Civil Engineering
    Stillwater, OK  United States  74074

    Association of American Railroads Research Center

    3140 South Federal Street
    Chicago, IL  United States  60616
  • Authors:
    • Haliburton, T A
  • Publication Date: 1980-8

Media Info

  • Features: Appendices; Figures; Photos; References;
  • Pagination: 92 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00330738
  • Record Type: Publication
  • Report/Paper Numbers: AAR-OSU Proj En4113
  • Files: TRIS
  • Created Date: Jun 12 1981 12:00AM