Cresco® expanding waterstops are particularly used for difficult geometric joint courses. These prevent the penetration of water in the construction joints of impermeable concrete structures. When water enters, the swelling process begins and creates a sealing effect. Our Cresco® GR is a rubber-based swelling tape which remains stable in its form and the sealing is achieved by the increase in volume and the swelling pressure. The bentonite-based swelling tape Cresco® BT also expands into cavities and cracks due to its volume increase.
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