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Technical Dayta Sheet Compedium

CONTENTS CONCRETE REPAIR CORROSION CONTROL GROUTS & ANCHORS PROTECTIVE COATINGS INDUSTRIAL FLOORING SURFACE TREATMENTS JOINT SEALANTS CONCRETE JOINTING JOINT FILLERS WATERPROOFING WATERSTOPS ROOFING TIMBER FLOORING ALPHABETICAL INDEX Technical Data Sheet Page 1 November 2012 511 ® Vandex® BB75-Z Surface applied, cement based render, waterproofing barrier for positive and negative water pressure applications Uses Waterproofing of concrete and masonry structures both new and old. Vandex BB75-Z is a cementitious membrane and does not rely on crystal growth to achieve its waterproofing. As a result, BB75-Z can be used on most masonry surfaces, including sandstone, provided that the surfaces are adequately prepared. Vandex BB75-Z has been formulated using sulphate resisting cement making it ideal for application in sewerage environments. It can be applied to either the pressure or non-pressure faces of the concrete or masonry. Vandex BB75-Z is excellent for solving the problem of water seepage through concrete and masonry in both new and old structures. Vandex BB75-Z is ideal in applications where the high pressure face is not easily accessible. It is also ideal for waterproofing the inside face of swimming pools, sewerage processing tanks, concrete block walls and any masonry surface where crystal growth waterproofing will not be effective due to a lack of alkalinity in the substrate. Other applications include; basement walls, lift pits, water storage and drainage tanks, sewer aqueducts etc. Advantages „ Abrasion resistant „ Applied to either the pressure or non-pressure face of concrete „ Approved for potable water contact „ Based on sulphate resisting cement making it suitable for use in sewerage processing tanks „ Works on masonry, brick, stone and concrete blocks where crystal growth treatments are not effective „ Non-toxic „ Suitable for permanent sunlight exposure after curing „ Tested to withstand a water head of 70 metres „ Colour compatible with the host concrete „ Can be applied to damp concrete Description Vandex BB75-Z is a ready-mixed, cementitious, surface applied, waterproofing membrane consisting of grey sulphate resistant cement, graded quartz sands and inorganic additives. Vandex BB75-Z is waterproof and has been tested to a pressure of 7.0 bar (70m water head). The initial and final bonding capability of BB75-Z is excellent, making it suitable for application to both vertical and horizontal surfaces. It is durable, resistant to frost and heat after setting and remains permeable to water vapour. Test reports and approvals Official Materials Testing Institute Clausthal-Zellerfield • Mechanical properties • Bend - tensile strength / compressive strength / adhesion / modulus of elasticity LMP Baustoffprufinstitut, Beinwll am Bee • Resistance against sewage • Shrinkage and swelling behaviour / bend tensile and compressive strength / structural composition Design criteria In most waterproofing applications, Vandex BB75-Z is applied in two coats by brush, trowel or spray. Specific minimum application rates are as follows; Ground moisture - one coat by brush, trowel or spray at an application rate of 3.0 kg / m² / coat (total minimum layer thickness for one coat must be 1.5 mm). Pressureless surface water - two coats by brush, trowel or spray at an application rate of 2.0 kg / m² / coat (total minimum layer thickness for two coats must be 2.0 mm). Water under pressure - two coats by brush, trowel or spray at an application rate of 3 kg / m² / coat (total minimum layer thickness for two coats must be 3.0 mm). Note: the maximum total thickness of all coats of the BB75-Z system should not exceed 5 mm. Note: Vandex BB75-Z is a rigid coating and as such will not accommodate any movement due to cracks or joints in the substrate beneath; in such applications an elasticised product such as BB75E-Z or Cemelast should be considered. November 2012


Technical Dayta Sheet Compedium
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