Swellable Water Stopper Bar, Width: 150 mm and 20 mm

Product Details

Integral sealing for construction joints in concrete cast insitu. Convenient and problem solving in situations where a conventional waterstop would require complex shuttering Typical uses include secant piled and diaphragm walled basements, pile caps and casting against old concrete. Supercast SW20 can provide simple solutions to detailing pipe entries, construction joints in the vertical plane and to kicker joints. Can be linked to Supercast PVC*† waterstops to give an effective combination of waterstops which maintain network continuity. Advantages ?? Easy to install ?? Supercast SWX*† swellable adhesive enable full integration of Supercast SW20 and Supercast PVC networks ?? Solves detailing problems in conjunction with Supercast PVC range ?? Swelling properties unaffected by long term wet/dry cycling ?? Delayed swell action allows extra tolerance on site ?? Sustains effective seal in wet conditions Standards compliance Suitable for use in contact with potable water - Water Byelaws Scheme Approved product. Description The Supercast SW20 is a swellable waterstop which can be installed and positively linked into conventional Supercast PVC waterstop networks.This allows the use of Supercast PVC for expansion joints and Supercast SW20 for construction joints all the time maintaining an integrated network. The Supercast SW20 is made from high performance synthetic elastomer strips. The swelling action is the result of contact between water and hydrophilic groups which are part of the Supercast SW20 'Basic Polymer' molecular structure. The hydrophilic groups are not subject to extraction or loss of swelling performance by prolonged or repeated wetting. This is a unique feature of the basic polymer. Expansion of the waterstop creates a positive pressure against the face of the concrete joint, thus preventing water passing through the protected joint. Design criteria Supercast SW20 should be used to prevent the passage of water through non-movement joints in both new in-situ concrete and between new and existing concrete. Supercast SW20 increases in volume in the range of up to 300% and gives a resistance to hydraulic heads of up to 60 metres. Swelling of Supercast SW20 in fresh concrete is minimal, therefore maximising the positive pressure to seal the joint. Supercast SW20 is suitable for application between existing and newly placed concrete where there is little or no steel continuity and where up to 2mm movement may occur. Supercast SW20 waterstops should be positioned to ensure that a minimum of 80 mm cover of concrete is present to accommodate pressure developed during the swelling process. Typical Properties Form : Red Rectangular section elastomeric strips Size : 10mm X 20mm Solids content : 100% Unrestrained volumetric expansion : Up to 300% Application temperature range : -20° to 50°C Service temperature range : -30° to 70°C Hydrostatic pressure resistance : 60 metres (6bar) Watertightness : Seals up to 2mm gap if used in conjunction with Supercast SWX or Supercast SW Adhesive Specification Supplier specification Water swellable - Basic Polymer - hydrophilic waterstop (and attachments) where shown on the drawings, shall be Fosroc Supercast SW20 obtained from Fosroc. It shall be used in accordance with the manufacturer's current application instructions.