The bridge joints are designed to allow rolling in adequate conditions, through the openings left between dashboard and constructive shoulder, absorbing the movements that thermal conditions,seism, etc, might produce.
Lately, the so called elastomeric seals have developed spectacularly, most of all in conservation works and in the replacement of original devices that have been damaged though time,as well as in the short roads’ joints. They consist in the spread of an elastomeric plaster on a distributionsheet. The results are excellent, the performance is quick and this system can be adapted to the most complex geometry. It is safe, comfortable and totally waterproofed (thanks to the elastic mixture which has been used to obtain the plaster); it’s easy to repair and has little impact on traffic.
They can be installed in new construction until the construction of half-bridges, as well as in conservation works and/or in replacement boards, because the irreversible shrinkage and creep movements have already past.It only requires that the layer of chipboardhas 7 cm thickness when the gasket is being installed; 8 to 10 cm is recommended (if is thicker, it can lead to an excess of material which willproduce a bigger deformability and more possibilities of seatings).