Quick fix existing expansion joints of concrete railway bridge

Existing expansion joints quick fix concrete bridge A railway, comprising the steps of: a, removal of residual rubber seal; B, removing dirt and dust on the surface of the concrete base and a metal side beam exposed surface, and then drying; C, mounting and positioning of the side liner and the backsheet; D, stencilled primer; E, repairing potting material; F, topcoat stencilled; G, be said repair material is substantially cured, the repair is complete. The repair method of the present invention can be adapted to a variety of irregular size seams bridge; installed, quick and easy replacement; polyurethane repair material itself has good durability and weatherability, suitable for rapid repair use; affordable, easy to use a large amount.