Polyurethane composite mortar for expansion joints on road bridge structures

The article analyzes the main reasons for the low durability of road pavement in the zone of expansion joints. The main prerequisites for the use of polymer-based compounds for filling the transition zone between the asphalt concrete pavement and the metal profile of the expansion joint are considered. The results of the study of physical, mechanical, and operational properties of the polyurethane-based compound are given, and the increased durability of the proposed solution is justified compared to traditional solutions. A feasibility study of the above solution has been completed. A technical solution for the design of an expansion joint transition zone is proposed.