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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 371 An approved closed cell polyethylene backer rod or bond breaker tape must be installed into the joint before sealant application. When placing the backer rod allow for a 5 mm set down of the sealant from the pavement surface. Priming Priming is not normally required provided the joint faces are clean and free from any trace of laitance and surface contamination. Primer 10 is recommended on concrete and masonry surfaces to achieve the best possible adhesion. A primer must be used if the sealant is to be submersed for long periods, such as joints in a flood crossing or where fuel or chemical spillage may occur. Consult your local Parchem sales office for advice on priming. Primer 13 must be used in applications where Roadseal is to be subjected to permanent water immersion. Application Roadseal is applied from 600 ml sausages or bulk containers into the joints using a suitable sealant gun. On larger projects, an air assisted gun and pump may be used allowing faster application. Within 10 minutes after application, the sealant must be tooled in order to improve contact with the joint faces, and to lower the sealant surface to a level about 5 mm below the pavement surface. Tooling is essential to force the sealant to make good contact with the joint faces and achieve good adhesion. Equipment Complete high volume application units include an air powered pump, follower plate, hose, gun, and applicator nozzle. The extrusion pumps are available with various output capacities. The hoses and connections must not allow moisture penetration. Teflon lined hoses are recommended because of their low moisture permeability. It should be noted that the rate of sealant delivery is affected by air pressure, hose length, hose diameter and nozzle diameter. Clean up Equipment may be cleaned of uncured sealant by wiping, or soaking and wiping with Solvent 10. Any sealant allowed to cure becomes very difficult to remove and can only be removed using Solvent 10 in combination with steel wool. Limitations Elastomeric sealants such as Roadseal should not be applied in close proximity to bituminous materials as these may contain components which can migrate into the sealant and result in staining, reduced performance or a loss of adhesion. Joints in asphalt roads should only be sealed with Roadseal SL, an ultra-low modulus version of Roadseal designed for sealing sawn joints in asphalt pavements and abutment joints between concrete and asphalt. Where asphalt is to be applied over the concrete pavement containing the Roadseal, a non-adhesive bond breaker tape must be applied over the sealant surface to prevent direct contact with the asphalt and to prevent the asphalt bonding to the sealant surface. Estimating Packaging Roadseal: 600 ml sausage (PC: 610402) 20 litre drum (PC: 610401) 200 litre drum (PC: 610405) Primer 10: 250 ml tin Primer 13: 250 ml pack (two-part epoxy) Solvent 10: 4 and 20 litre drums Coverage Each 20 litre drum will seal approximately 200 metres of joint with a 10 mm wide by 10 mm deep sealant bead. Storage Storage life of 18 months in original containers when kept in cool, dry conditions. Emer-Seal® Roadseal


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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