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Technical Dayta Sheet Compedium

CONTENTS INDEX 370 Technical CONCRETE REPAIR CORROSION CONTROL GROUTS & ANCHORS PROTECTIVE COATINGS INDUSTRIAL FLOORING SURFACE TREATMENTS JOINT SEALANTS CONCRETE JOINTING ROOFING WATERSTOPS WATERPROOFING JOINT FILLERS TIMBER FLOORING ALPHABETICAL Data Sheet Emer-Seal® Roadseal High performance, low modulus, high joint movement accommodation, onecomponent silicone rubber joint sealant Uses Sealing joints in: „ Concrete roads & pavements „ Bridge decks and car parks „ Aircraft runways and aprons Advantages „ Ready to use „ Easy contractor application „ No mixing required „ Fast rate of cure „ Excellent adhesion to clean dry concrete „ Excellent weathering - UV and ozone resistant „ Dispensed from a bulk container by hand or air powered pump „ Large joint movement accommodation Standards Compliance NSW RTA Bridge Decks QA Spec. B312 Ed 3/ Rev 0, 9/98 • Type GN - Accepted for use • Type GT - Meets performance requirements (except hardness) NSW RTA Rigid Pavements Spec R83.4 Ed 2/Rev 3, 8/99 • Accepted for use QLD Main Roads - MRS11.82 • Approved for use QLD Main Roads - Concrete Pavements Spec MRS 11.40 7/96 Table 4.3.4 • Suitable for use Description Roadseal is a one-part, gun applied, silicone rubber joint sealant designed to effectively seal joints in concrete roads, runways, carparks and pavements. The low modulus characteristics of Roadseal allow it to accommodate cyclic joint movements of plus 100% and minus 50%. Roadseal is designed to be applied to joints between concrete pavements in order to prevent running water from undermining the pavement. Roadseal also serves to prevent stones from being deposited in the joints which would otherwise lock the joints and restrict the free thermal movement of adjacent pavement segments. Properties Data quoted are typical for these products, but do not constitute a specification. Form: Non slump, thixotropic February 2011 Page 1 paste Colour: Concrete Grey Physical or chemical Change: Chemical cure, moisture activated Hardness (Shore A): 17 +/- 5 Application temperature: Minimum 5°C Service temperature: Minus 50°C - 150°C Tooling time @ 23°C : 20 minutes Tack free time @ 23°C: 45 - 60 minutes Movement accommodation factor: Plus 100% - minus 50% Elongation ASTM D412 : 1000% Chemical resistance to occasional spillage: Resistant to dilute acids and alkalis. Not resistant to organic solvents Design Criteria Roadseal is designed for use in joints between concrete pavements. All moving joints should be designed with an optimum width to depth ratio of 2:1 and an overriding minimum sealant depth of 10 mm. In all joints either a polyethylene bond breaker tape or backing rod must be used to ensure that the correct width to depth profile is achieved and to prevent the sealant from adhering to the base of the joint. The sealant should be applied and tooled so that the sealant surface is about 5 mm below the pavement surface. Application Instructions Joint preparation All concrete to which Roadseal is to be applied must be a minimum of 14 days old. All joint surfaces must be clean, dry and free from any concrete slurry, oil, dirt or loose material, form release or curing compounds. Saw cut joints must be thoroughly cleaned of all concrete slurry by a high pressure water wash, followed by drying with high pressure compressed air. After air blasting the surface water away, the joints must be allowed to dry normally for an additional 16 hours. Where atmospheric conditions are not conducive to good drying e.g. low temperatures, high humidity or rain; Primer 10 or Primer 13 should be used. Where previously sealed joints are to be re-sealed, mechanically remove all of the existing sealant prior to saw cutting the joint. Care should be taken not to melt residual asphaltic sealant and spread it onto the joint faces with the hot saw blade. Before application of the Roadseal remove any wind blown debris from the joints with a blast of dry, oil free, compressed air. February 2011


Technical Dayta Sheet Compedium
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