Bentonite strips are ideal for sealing working joints, partition joints and wall penetrations in ground, engineering and water structures. They feature simple and quick installation.
When to use a bentonite waterstop strip?
- To seal working joints between concrete slabs and vertical walls.
- To seal working joints where two materials come into contact, e.g., concrete-to-concrete, stone-to-concrete or steel-to-concrete
- To seal contact joints between steel pipes and concrete bodies, for example, in swimming pools, sedimentation tanks, reservoirs, etc.
- To seal joints in tunnels, dams, water management structures, including drinking water tanks.
What are the technical properties of bentonite waterstop strips?
- A bentonite waterstop strip is an elastic bentonite-based profile specifically developed for waterproofing construction joints.
- Due to its chemical composition, the strip expands on contact with water, increasing its volume by up to 200%. This creates reliable protection against water, including pressurised water. It also reliably seals hairline cracks, even in aggressive and wastewater environments.
How to install bentonite sealing strips?
- Do not apply the sealing strip to surfaces with standing water present. Water must be completely removed from the surface.
- Lay the sealing strip on the underlying concrete surface to ensure perfect contact with the substrate. Bentonite sealant can be used for alignment. Then place the reinforcing liner and fix with steel studs in intervals of approx. 25 cm.
- Concreting may be carried out immediately after the sealing strip is placed.
- The minimum thickness of concrete above the MQ sealing strip is 7 cm.
Basic size range of MQ series bentonite waterstop strips
| Designation | Dimensions | Colour | Length | Packaging/cardboard box | Pieces/pallet |
|---|---|---|---|---|---|
| MQ 10 | 23 x 18 mm | black | 5 m | 8 pcs | 18 cardboard boxes/ 720 m |
| MQ 13 | 20 x 15 mm | black | 5 m | 8 pcs | 18 cardboard boxes/ 720 m |
| MQ 14 | 10 x 15 mm | black | 8 m | 12 pcs | 18 cardboard boxes/ 1728 m |
| MQ 20 | 20 x 25 mm | black | 5 m | 8 pcs | 18 cardboard boxes/ 720 m |
| MQ 114 | 150 x 1.5 mm | black | 1 roll 5 m, 10 m, maximum 20 m |
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All bentonite tape sizes are also produced with MQF protective film. This film prolongs the tapes response when in contact with water.
Do you need advice on sealing working joints with bentonite sealing strips? Contact us.
