One of the causes of water-permeable concrete are defects in the form of gravel pockets, which are places where the concrete has not been properly compacted. At these points, water can flow through the concrete. The injection of these leaks is best done with non foaming injection materials. Waterstop foam pressed into such a disturbed zone will not provide a reliable waterproofing result, the foam structure cannot build up properly. That is why we use non-foaming materials that react homogeneously.
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