Elastic bridge joints
We have been implementing elastic bridge joints since 1994. An elastic bridge joint consists of a flexible material composed of an asphalt binder. For elastic bridge joints, we use materials by Gjerlev a/S - Tarcomastics, Crafco - Parking Lot Sealant ev. MC Bauchemie - Nafutekt Plus as binders. This material is adhesively bonded to the substrate and adjacent pavement layers. Elastic bridge joints are designed to transmit of expansion movements up to 50 mm, exceptionally up to 70 mm. The width of elastic bridge joints ranges from 300mm to 500mm. Elastic bridge joints are implemented in accordance with the TP80 standard. When implementing elastic bridge joints, the Crafco Supershot 60D asphalt grouting machine is used.
Mageba Tenza Rail MBU30 subsurface expansion joints
When implementing insulation systems on bridges, we also implement subsurface bridge joints. Subsurface bridge joints are implemented in accordance with TP86. The supplier of these joints is Mageba CS s.r.o. Subsurface joints are designed to transmit expansion movements up to 30 mm of total displacement.
Subsurface bridge joints consist of a rubber strip, rubber strip reinforcement, pressure bar and sealing compound. The join is installed directly on the construction site into a pre-concreted concrete bed in the bridge and joint wall (or transition slab). On wearing courses of roads above subsurface bridge joints, asphalt grouting is implemented.
HEAD OF Department
Ing. Tomáš Uwira