A POLYURETHANE BALLAST LAYER, THE METHOD FOR PREPARING THE SAME AND THE USE THEREOF

摘要

A polyurethane ballast layer, the method for preparing the same and a railway comprising the polyurethane ballast layer. The polyurethane ballast layer comprises a polyurethane - filled ballast layer (20) and a polyurethane external protective layer, wherein the polyurethane - filled ballast layer comprises ballasts and polyurethane foam (30) filled in the space among the ballasts.