AT System

The AT System is an important advance in concrete joint protection which combines Active Technology with the conventional mechanical properties of PVC waterstops.

Conventional PVC waterstops work by the normal action of the concrete shrinking away from the joint and against one face of the ribs or bulbs of the waterstop. This creates positive pressure on the rib or bulb causing a “valve action” to resist water ingress.

However, this shrinkage movement also forms an inevitable void on the opposite face of the rib or bulb which can allow water under high pressure to track along the waterstop searching for a path to bypass the waterstop.

Subsequent cyclical movement of the joint can compound the problem resulting in further leakage.

Applications:
• Basements
• Reservoirs
• Sewage treatment works

Technical Data

AT System 200

200mm x 7.5m

AT System 240

240mm x 7.5m

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