Acrylate gels for stopping of water inrush
It is possible to stop minor water ingress with the quick reacting acrylate gel VARIOTITE. To accomplish this, the product must be set to its most rapid reaction time (approx. 10-15 s), in that the relevant quantity of initiator is employed for the blending of the B component (see Technical data sheet).
The injection process should be carried out at a flow rate as high as possible via packers with a large inner diameter. Prior to this procedure the water ingress should be inhibited as far as possible. This can be accomplished using quick reacting cements such as F30 and F60 or by means of mechanical plugging, for example with cloths.
However, even quick reacting acrylate gels have their limitations in the stopping of ingressing water, because the acrylate gels are water soluble. On incidence of considerable faults through which the water can permeate the component, as well as in event of an extremely high flowing rate of the water, it would be more sensible to employ Polyurethane foams such as PUR-O-STOP to inhibit the water ingress, as these cannot be diluted by the water.