The requirements for shuttered fair-faced concrete surfaces are particularly high for representative structural elements in building construction. For this purpose, spacers with a minimum contact area are recommended in order to avoid marking the contact points.
Whether for force transmission, sealing or special component geometries – there is a great deal of variation in the execution of expansion joints. For that reason, the manufacture of this formwork on the building site is often complex, unreliable and time-consuming.
Expansions joints are placed to safely absorb the expected movement between individual concrete sections. The transition between a cold joint seal using coated metal waterstops and expansion joint seal with PVC waterbars must be executed with particular care