It is used for the planned sealing of construction cold joints. On contact with water, the swelling pressure increases slowly and thus ensures a tight seal of construction joints and cracks. It retains its shape during the swelling process. The maximum swelling capacity is limited to 300% of the initial mass, with an optimum cross section of 22 x 6 mm ensuring that there is no danger of concrete spalling due to excessive pressure. The unique compound compositions allows for temporary exposure to water without any swelling to occur. It is used to seal construction joints in in-situ-concrete against
- Soil humidity
- Water without hydro-static pressure
- Water with hydro-static pressure up to 2 bars (tested up to 100 m pressure
Areas of application are varied and include: wall/base connection joints, pipe penetrations, sealing of recesses, and anywhere where new and old concrete is joined. We recommend installing expanding waterstop using the special adhesive. Optional installation with powder actuated fasteners is possible, but the use of a grid-rail is not necessary. Splices are formed as butt-joints or simply overlapped. The substrate must be clean, free of any bond inhibiting debris such as dust, grease and ponding water. Do not install over voids.