Method for restoring used railroad ties and the restored...

E - Fixed Constructions – 01 – B

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E01B 3/00 (2006.01) B29C 39/10 (2006.01) E01B 31/18 (2006.01)

Patent

CA 2548104

This invention provides a method for restoring at least one means defining a railroad spike hole located in a used railroad tie. In this way, the restored railroad tie can be reused in subsequent rail replacement operations. The restored railroad tie is capable of having a railroad spike penetrate and be retained within the confines of the restored railroad spike hole without substantial bending problems. The used railroad tie provided has at least one spike hole located therein. In each the means defining a railroad spike hole is formed a polymeric plug. The polymeric plug comprises a polymeric plug formed of a polymeric material including a plurality of flexible, readily deformable micro-inclusions which allow the formation of spike insertion pathways that track the insertion forces of the railroad spike as it is driven into a material thereby facilitating introduction of the railroad spike into said polymeric plug. The polymeric plug is capable of penetration by and retention of the railroad spike there within.

La présente invention concerne un procédé de réhabilitation d'au moins un dispositif définissant un trou de tirefond dans une traverse de chemin de fer usagée. Le procédé permet de réutiliser la traverse réhabilitée pour des opérations de remise en état des voies. La traverse ainsi réhabilitée se prête donc à la pénétration et la retenue d'un tirefond dans les limites du trou de tirefond réhabilité sans problèmes notoires de fléchissement. La traverse usagée considérée comporte au moins un trou de tirefond. Dans chacun des dispositifs définissant un trou de tirefond on réalise un bouchon polymère. Ce bouchon polymère comprend un bouchon polymère fait d'un matériau polymère incluant une pluralité de micro-inclusions souples et facilement déformables, ce qui permet de réaliser des chemins d'insertion des tirefonds qui guident les forces d'insertion des tirefonds pendant qu'on les fait rentrer dans le matériau, ce qui facilite l'introduction du tirefond dans le bouchon polymère. Ce bouchon polymère se prête à la pénétration et la retenue du tirefond.

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