Abstract: A flangeway filler and sealing composition suitable for use in a flangeway or expansion joint in a railroad crossing of a roadway surface prepared by the steps of (i) placing cryogenically granulated elastomeric particles in a suitable container; (ii) adding a polyurethane resin to said cryogenically granulated elastomeric particles; (iii) mixing the cryogenically granulated elastomeric particles and the polyurethane resin. The cryogenically granulated elastomeric particles have an average particle size of less than about 3 mm, and the ratio of the cryogenically granulated elastomeric particles to the polyurethane resin is greater than 6 to 1 by weight.

Abstract: A method and apparatus for forming a railroad grade crossing comprising a vehicular supporting structure formed by a plurality of precast slabs fixedly located between and on opposite sides of a pair of running rails. A variety of slabs are provided for accommodation of multiple, switch and curved sections of track, with each slab being adjustably positioned relative to the elevation of the rails by temporary shims located proximate each of the marginal corners thereof and carried on the longitudinally spaced railroad ties. A supporting bracket is provided for fixedly connecting the slabs to the running rail. The structure is subsequently supported on a plurality of initially deformable pads located on the railroad ties and which are compressed and preformed to accommodate all inconsistencies and irregularities of the ties. In installations involving signal control sections of track, the supporting bracket is insulated from the running rails whereby to preclude any interference therewith.