Hydrophilic Bentonite Waterstop

UNISWELL® SW47-B is a high-performance flexible bentonite rubber based hydrophilic waterstop suitable for non-movement construction joints (new or existing joints) where it is fully contained within the joint. The swelling action of the UNISWELL® SW47-B range is the result of contact between water and hydrophilic groups which are an intimate part of the UNISWELL® SW47-B polymeric structure. These hydrophilic groups are not subject to extraction and loss of swelling performance by prolonged or repeated wetting. Expansion of the waterstop creates a positive pressure against the faces of the concrete joint, and fills all the irregular surfaces, voids, and gaps of the joint, and at the same time generates a huge contact pressure to prevent any leakage, thus preventing water from passing through the joint. UNISWELL® SW47-B unlike many other swellable waterstop, will not crack and fragments when it expands. A waterstop that cracks while expanding will dissolve in water like clay and give rise to pollution and the hydrophilic expansion properties will be lost after a long period. Download Catalogue