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How to: Redundant construction cold joint waterproofing using coated metal water stops and injection hose

Die MAX FRANK Sekundärabdichtung im Einsatz

Coated metal water stops have been established to be simple and secure solutions in sealing construction cold joints. After decades of use, these waterstops have proven themselves to be effective, durable and highly reliable. However, in the event of unanticipated joint movement, late shrinkage or ground movement, the primary seal can become compromised and crack injection may be necessary to seal the joint.
The use of a redundant waterproofing system can alleviate this problem. Preferably, an injection hose system for multiple injections is installed in tandem with the coated metal water stop.

Sekundärabdichtung mit Fradiflex® Fugenblech und Intec® Injektionsschlauchsystem

How to:

  • The slab to rising wall construction cold joint is sealed by installing the Fradiflex® coated metal water stop on the rebar top layer with 30 mm minimum embedment
  • After concreting the slab the installation of the Intec® injection hose can commence. Ideally, the hose is placed on top the coated metal waterstop on the opposing water bearing side using mounting clips

There are several different options for injection, depending on the selected type of injection hose:

  • For polyurethane injections Intec® Premium may be used.
  • Where larger voids need to be filled, it is recommended to use the Intec® Cem N hose system, which allows cement pastes and slurries to be injected.

Both systems allow for multiple injections. Intec® Premium can be flushed using compressed air and Intec® Cem N needs to emptied via vacuuming.

November 2016

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+44 1782 598 041

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Max Frank Ltd.
Clough Street, Hanley
Stoke-on-Trent, ST1 4AF
Staffordshire
United Kingdom

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