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32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf

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 523 ® Vandex® Concrete Grey Concrete capillary penetrating, crystal growth sealing, cement based, waterproofing system for positive and negative water pressure applications Uses Vandex Concrete Grey can be applied to either the pressure or non-pressure faces of concrete and is excellent for solving the problem of water seepage through porous or cracked concrete in both new and old structures. Vandex Concrete Grey is ideal for treating concrete surfaces where the high pressure face is not easily accessible. Typical applications include; lift pits, basement walls, concrete floor slabs, balconies, water storage tanks, swimming pools, sewerage treatment plants, canals and bridges etc. Advantages „ In-depth waterproofing „ Permanently active „ Applied to either the pressure or non-pressure face of concrete „ Waterproofs static cracks and capillaries up to 0.3 mm width „ Approved for potable water contact „ Compatible with the host concrete „ 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 „ Priming not required to clean, well prepared concrete surfaces Description Vandex Concrete Grey is an in-depth cementitious waterproofing compound consisting of grey Portland cement and specially treated quartz sand blended with a range of active chemicals. Vandex Concrete Grey is pigmented to provide a more uniform colour which is more compatible with aged concrete. After application, Vandex Concrete Grey supplies active ingredients to the host concrete under the forces of osmosis which react with the free lime in the host concrete to produce dendritic crystals. The crystals formed effectively block the pores, capillaries and minor cracks in the host concrete preventing the passage of liquid water, however the Vandex Concrete Grey treated concrete will still allow the passage of water vapour through the structure, thereby allowing the structure to breathe. The fact that the waterproofing takes place from within the host concrete means that even under very high negative side water pressures, the waterproofing will not blister or be pushed off the wall. Test Reports and Approvals WRc Evaluation & Testing Centre Ltd, Oakdale, Gwent ‡ Potable water compatibility ‡ WBS Approval / Water Byelaws Scheme - approved Drinking Water Inspectorate, Romney House, London ‡ Potable water compatibility - DWI-approval Ambric Testing Inc. Philadelphia ‡ Waterproofing - water penetration National Sanitation Foundation, Michigan ‡ Potable water compatibility - NSF-approval Australian Standard 4020 ‡ Potable water compatibility maximum pass achieved Design Criteria In most remedial waterproofing applications, Vandex Concrete Grey is normally applied in two coats by brush or spray at an application rate of 0.75 kg / m² / coat. Other applications include; Water retaining structures - two coats by brush or spray at an application rate of 0.75kg / m² / coat. Concrete slabs - one coat at an application rate of 1.2 kg / m² by brush onto hardened concrete, or dry sprinkled onto fresh wet concrete after initial set, and power trowelled into the surface. Construction joints - one coat by brush at an application rate of 1.5 kg / m², applied to the abutting slab immediately before the next concrete pour. November 2012


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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