Grout Seals

The CRUX Grout Seal is a passive grout support system, requiring no activation. The action of pile installation through the Grout Seal sets up a hoop tension in the reinforced bulbous ring. The resultant radial reaction of the bulbous ring acting against the pile associated with the hoop tension then counteracts the grout pressure forces.

The system accepts the tolerance, which must be provided within pile centralisers without significant loss of capacity. The bulbous ring positions itself to locate around the pile at its position within the centraliser shims.

A single Grout Seal unit has the capacity to support 30 metres or more of submerged grout. Capacity can be increased by adding more core fabric within the bulbous ring. Where grout pressure heads exceed the level for which it is prudent to use a single unit, capacity can be achieved by provision of a dual system, with support capacity shared between two Grout Seals.

Fitting is achieved by insertion between two pre-installed keeper plates. The fixing toroid is then filled and pressurised with epoxy to provide an effective and secure fixing.

Grout Seals can be pre-fitted in Cans which are then delivered to the fabrication yard for connection to the structure or, alternatively, they may be site fitted. In either case no site commissioning is required.