An economical means of upgrading deteriorated railroad crossovers is described, which consists of a track-span system using precast concrete blocks laid between the rails and either side, then filled and surfaced with resilient rubber-epoxy filler that totally surrounds and adheres to the rail, ties and ballast, completely water-proofing the crossing. The job which required only six hours will give the crossing a service life of 15 to 20 years. At the job site, the liquid epoxy was drawn with bags of finely ground used car tires in a mortar mixer. It is combined together in a 1 to 4 ratio. Placed in position, it is stamped into place, then covered with a 2.5 inch thick wear surface which is tamped in place and smoothed with a scraper bar, and trowel. Curing in mild weather requires about 4 hours, and longer in cold weather. It can be applied in temperatures down to 40 deg. F. The impervious resilient mass which completely seals the substructure, flexes with the passing of trains and easily counters the side thrust of vehicles moving over the crossing.

Media Info

  • Features: Figures;
  • Pagination: p. 24-25
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00097420
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 13 1975 12:00AM