The main projects of Light Rail (tramways) are designed with dedicated platforms by means of embedded grooved rails along a wide pallet of pavements allowing car trafic or not.
To prevent that the rail does not become source of disorder on this delicate interface with street surfaces: a longitudinal joint is poured
on both sides of the rail to ensure a flexible and insulating sealing with adjacent pavements. High rigidity of pavements, like concrete, paving stones, asphaltic concrete, metal, is indeed not suitable with movements transmitted by the rail.
This joint must be able to bear the stresses transmitted by the rail but also all the aggressions of an environment of urban roadway to maintain an adhesion between the rail and street surface structure.
Technology V FLEX developed the range of joints V FLEX 20 A polyurethane bi-component
elastomer without solvent to respect specifically
Light Rail specifications and above all:
- a maximum differential deformation by shearing in the vertical plan of 4 mm.
- a maximum horizontal deformation by compression between rail and adjacent street surface structure of 2 mm.
