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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 Typically, joints in water retaining structures will be 20mm (W) x 20mm (D) up to 50mm (W) x 25mm (D) When joint sizes are outside these parameters, consult with the local Parchem sales office for specific advice. Movement accommodation factor (MAF) Joints expected to withstand repeated or cyclical movement or extremes of heat, chemical attack or physical abuse should be designed and spaced so that total joint movement under tension and compression does not exceed +/- 30% (total 60%) of the joint width at time of sealing. The total movement in shear should not exceed 50% of joint width at time of sealing in these joints. Bond breaker tape and joint fillers Joints subject to hydrostatic pressure must have the sealant supported by a sound, rigid Parchem joint backing material and must incorporate a suitable Fosroc Supercast waterstop. Do not use backing materials which will bleed oils, solvents or bitumen. A self adhesive polyethylene bond breaker tape must be used to prevent adhesion of Emer-Seal 200 to the back of joint or to joint fillers and thus allow optimum sealant performance. Under no circumstances should duct tape, masking tape or any other tape be used apart from a polyethylene tape (See application example below for uses of backing materials). Priming Priming is essential on all surfaces to assure a sound bond between substrate and sealant and ensure that optimum movement capability and ageing characteristics are realised. (See Application instructions for details). 363 Emer-Seal® 200 High joint movement accommodation, two component, polyurethane joint sealant for water retaining structures Uses Sealing movement and static joints in water retaining structures, especially in applications likely to be subjected to biological degradation such as: „ Sludge digestion tanks „ Sewerage and water treatment plants „ Filtration and aeration tanks „ Water reservoirs Advantages „ Resistant to bacteriological attack „ Slump resistant - suitable for vertical joints „ Abrasion resistant „ Excellent adhesion to primed substrates „ High joint movement accommodation „ Two component - predictable, even cure rate „ Long track record in demanding environments Standards Compliance Emer-Seal 200 complies with the following standards: AS 4020 - Products for use in contact with potable water. Description Emer-Seal 200 is a two part, gun grade, slump resistant elastomeric polyurethane sealant specially formulated for sealing joints in all water retaining structures. It is highly resistant to biodegradation by both aerobic and anaerobic bacteria, which makes Emer-Seal 200 particularly well suited to sewage treatment and storage plants. Technical Support Parchem offers a comprehensive range of high performance, high quality construction products. In addition, Parchem offers a technical support package to specifiers, end-users and contractors, as well as on-site technical assistance. Design Criteria Emer-Seal 200 is designed for use in water retaining structures and may be applied to joints between 20 mm and 50 mm wide. Joints should be designed to accommodate the anticipated movement due to thermal changes, hydrostatic forces and any other factors. To cope with the hydrostatic pressures the joint sealant depth should be a minimum 20mm to ensure sufficient bond to the joint faces. Joint width to depth ratio should never exceed 1:1 ie. The depth should never be greater than the width. January 2013 Page 1 Emer-Seal 200 Bond Breaker Tape Waterstop Emer-Seal 200 Central Waterstop Bond Breaker Tape Examples of a sealed joints in water-excluding structures. January 2013


Technical Dayta Sheet Compedium
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