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In a railroad track comprising a railroad rail having a lower flange, a railroad tie made from concrete, and a polyurethane pad mounted between the lower flange of the railroad rail and an upper surface of the railroad tie, a particulate layer is interposed between the polyurethane pad and the railr

In a railroad track comprising a railroad rail having a lower flange, a railroad tie made from concrete, and a polyurethane pad mounted between the lower flange of the railroad rail and an upper surface of the railroad tie, a particulate layer is interposed between the polyurethane pad and the railroad tie and comprises particles bonded to the polyurethane pad. Preferably, the bonded particles are polycarbonate, acrylic, or nylon particles, either granules or fibers. Alternatively, the bonded particles are particles of quartz, silica sand, silicon carbide, or aluminum oxide. An adhesive layer is interposed between the polyurethane pad and the railroad tie, comprises a methacrylate ester composition, and is bonded to particles among the bonded particles and to the railroad tie, whereby the polyurethane pad and the railroad tie are bonded to one another via the particulate and adhesive layers.

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In a railroad track, a combination comprising a railroad rail having a lower flange, a railroad tie, an elastomeric pad mounted between the lower flange of the railroad rail and an upper surface of the railroad tie, the elastomeric pad being in direct contact with the lower flange of the railroad ra

In a railroad track, a combination comprising a railroad rail having a lower flange, a railroad tie, an elastomeric pad mounted between the lower flange of the railroad rail and an upper surface of the railroad tie, the elastomeric pad being in direct contact with the lower flange of the railroad rail, and means comprising a particulate layer and an adhesive layer for bonding the elastomeric pad to the railroad tie, the particulate layer being interposed between the elastomeric pad and the railroad tie and comprising particles bonded to the elastomeric pad, the adhesive layer being interposed between the elastomeric pad and the railroad tie and bonded to particles among the bonded particles and to the railroad tie, whereby the elastomeric pad and the railroad tie are bonded to one another via the particulate and adhesive layers so as to resist relative movement between the elastomeric pad and the railroad tie, the combination permitting relative movement between the railroad rail and the elastomeric pad.