Waterproofing of seams when the foundation is already poured: a solution from the manufacturer of repair hydraulic spigots

When the foundation slab or part of the wall has already been poured, and the issue of waterproofing the joints has not been resolved in time, standard methods are no longer applicable. The classic internal waterstop, which is laid in the reinforcing frame before the start of concrete work, can no longer be integrated.
However, this is not a reason to give up reliable protection. As a manufacturer of profile products for waterproofing, we have developed and mass-produce a professional solution for such tasks - repair hydraulic plugs of the PO (U-shaped) and ND-R series for expansion joints . They allow you to create a hermetic barrier at the boundary of "old" and "new" concrete, protecting the structure from groundwater and capillary moisture.
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What is a repair hydraulic wedge and how is it arranged?
Repair hydro-shponka ( PO - U-shaped formwork , or ND-R - deformation repair overlay ) is a profiled strip made of plasticized polyvinyl chloride PVC.

Its main design difference is its asymmetrical profile:

— Smooth (flat) side: Designed specifically for mechanical pressing and bonding to an existing, hardened concrete surface.
— Grooved side (with anchors): Has protrusions, ribs and locks. This part protrudes outward and is monolithically embedded in the new concrete during the next pouring stage.
— Expansion joint (for expansion joints): A U-shaped (or O-shaped) “compensator” is located in the center of the key. It allows the key to compress, expand, and move with the movement of the concrete blocks without losing its tightness.

Alternative options
If it is not possible to technically secure the repair hydraulic wedge, other materials are used to seal the "cold" (working) joint between the old and new concrete:

— Bentonite rope waterstop: A special cord that is glued or doweled to the cleaned old concrete immediately before pouring the new one. When in contact with water, it swells and seals the joint. It is easier to install on a finished foundation, but it is only suitable for static (non-deformation) joints.
— Acrylic rope: Works on a similar principle, expanding from moisture and blocking the path of water.

Why do construction companies and designers choose us?
As a manufacturer, we offer not just a product, but a comprehensive engineering solution, we produce all types of waterproofing dowels:

— Stable geometry and material quality: our dowels have clear anchor dimensions and optimal elasticity, which is not lost even at low temperatures.
— Flexibility for the project: we can manufacture PO and ND-R series keys of the required width and thickness to meet the requirements of your facility.
— Technical support: our specialists are ready to advise on the choice of size, selection of related materials, and installation supervision at the construction site.

Repair hydraulic plugs from our production are a guarantee that even a complex joint between old and new concrete will remain completely dry for many years.