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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 ROOFING WATERSTOPS WATERPROOFING JOINT FILLERS TIMBER FLOORING ALPHABETICAL Ethanol 100% Resistant, > 1 month Heptane Not resistant, <24 hours * Hydrochloric Acid 10% Resistant, > 1 month Hydrochloric Acid 20% Resistant, > 1 month Hydrochloric Acid Conc. 36% INDEX 368 Not resistant, >2 hours * Glycol 100% Resistant, no attack Lactic Acid 10% Resistant, may discolour Lactic Acid 25% Resistant, may discolour Motor Oil (unused) 100% Resistant, no attack Motor Oil (used) 100% Resistant, no attack Nitric Acid 10% Resistant, > 1 month Nitric Acid 25% Resistant, > 7 days Nitric Acid Conc. 70% Not resistant, <1 hour * Petrol, unleaded 100% Not resistant, <24 hours * Phosphoric Acid 10% Resistant, no attack Sodium Hydroxide 10% Resistant, no attack Sodium Hydroxide 25% Resistant, no attack Sodium Hydroxide 30% Resistant, no attack Sodium Hydroxide Resistant, no attack Conc. 50% Sugar Solution (saturated) Resistant, no attack Sulphuric Acid 10% Resistant, no attack Sulphuric Acid 25% Resistant, no attack Sulphuric Acid 50% Resistant, no attack Sulphuric Acid 75% Resistant, > 1 month Sulphuric Acid 98% Not resistant, >2 hours * Skydrol 100% Resistant, > 1 month Wine (Red) 100% Resistant, no attack Xylene Not resistant, <24 hours * Note: * = suitable for intermittent exposure only. Specification Clauses Where so marked on the drawings, joints are to be sealed with a high performance joint sealant offering proven performance against chemical attack. The joint sealant must be capable of accommodating +/- 25% joint movement and should be accompanied by data confirming the level of resistance of the sealant to the chemicals in question. Joint preparation, priming and sealant application must be in strict accordance with the current technical data. The joint sealant must be manufactured in Australia by an ISO9001 accredited supplier. The joint sealant must be installed by a contractor nominated by the supplier. Emer-Seal CR supplied by Parchem is such a product. Applications Instructions Joint preparation Ensure that all joint dimensions are as specified, and that the anticipated joint movement is within the movement accommodation capability of Emer-Seal CR. New concrete must be allowed to cure for a minimum of 28 days before sealant installation. Joint faces must be sound and completely dry, clean and frost free. Oil, grease, curing compounds, form release agents, and all surface contaminants must be completely removed by grinding the joint faces or by using Parchem Solvent. Bond breakers and joint fillers Joints subject to hydrostatic pressure must have the sealant supported by a suitable rigid joint filler such as Parchem Hydrocor. Joints subject to hydrostatic pressure must also contain a suitable waterstop such as a Fosroc Supercast PVC. In joints not subject to hydrostatic pressure, a backing rod such as Expandafoam Backing Rod may be used. In formed joints a polyethylene bond breaker tape must be used to prevent sealant from adhering to the back face of the joint. Note: do NOT use masking tape, electrical insulation tape or ‘Gafa’ tape as a bond breaker tape. Emer-Seal CR may bond to the tapes and result in the failure of the joint sealant. Priming All joint surfaces must be sound and free from any trace of surface contamination. While Emer-Seal CR offers very good adhesion to concrete and masonry, the agressive nature of the chemicals that come into contact with the sealant demand that primers be used on masonry substrates. Priming is not normally required on solvent cleaned glass (use only Parchem Solvent for cleaning), ceramic and metal surfaces. Where metal surfaces are treated with paints or other organic coatings, adhesion testing is recommended to ensure that adequate adhesion will be achieved. Concrete and masonry surfaces must be primed with Primer 13, a two component epoxy primer which combines excellent chemical resistance with good hydrolytic stability, making this primer ideal for use in demanding chemical resistance applications. Emer-Seal CR used in conjunction with Primer 13 is suitable for use in permanently water immersed applications. Primer 13 must be touch dry before applying Emer-Seal CR sealant. For advice on other applications, or where Emer-Seal CR is to be used with other substrates, contact your nearest Parchem sales office. Emer-Seal® CR


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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