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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 Page 1 June 2014 389 Conwrap Reinforced bituminous sealing tape for pre-cast concrete Uses Conwrap is an externally applied tape for sealing joints in pre-cast elements such as box culverts. Conwrap is normally used in conjunction with internally placed Conseal CS231 sealing strip. Advantages „ Single layer application „ Cost efficient „ Lends itself to neat effective detailing „ High strength material provides excellent resistance to tearing and abrasions from back filling „ Aggressively bonds to concrete and metal structures „ Provides a permanent flexible watertight seal „ Has greater puncture resistance, thus reducing site damage possibilities „ Conwrap remains flexible; it will not become brittle and crack either with cold weather or with aging „ Its thickness is constant throughout. It is factory controlled and not subject to variation by labour on- site „ It is thoroughly jointed on site by pressing and rolling laps together for a permanent, watertight seal Description Conwrap is a self-adhesive bituminous membrane incorporating a cross laminated HDPE film. The bitumen compounds used to manufacture the product are modified with SBS to promote maximum adhesion to the substrate. The HDPE film provides the product with excellent physical and application properties. Technical Support Parchem offers a technical support package to specifiers, end-users and contractors, as well as on-site technical assistance. Properties Form: Self-adhesive laminated sheet Colour: Charcoal grey Total thickness: 1.6 mm Mass: 1.6 kg/m² Water vapour transmission 0.05 g/m² h ASTM E96: Tensile strength longitudinal ASTM D638: > 43 N Ultimate elongation ASTM D638: > 380% Resistance to tear UNI 8202/9: > 73 N Cold flexibility DIN 52123: < -40°C Application temperature: 5°C - 45°C Service temperature (continuous ambient): -30°C - +80°C Installation Instructions Typical for Joints in Concrete Culverts. Surface preparation To ensure adequate bonding of the Conwrap, the concrete surface must be free from dirt, water, grease and other loose material. Rough concrete must be “faired up” before application begins. Holes and cracks should be filled or repaired using suitable repair materials. Parchem can assist with selection of these material. Priming Priming the concrete surfaces to which the Conwrap is to be applied is recommended to ensure maximum adhesion. Emer-Proof Self Adhesive Primer is the recommended primer which can be used directly from the container with a brush. Coverage width should exceed Conwrap width by 50 mm either side. Coverage rate of the primer on concrete is approx. 6 m²/litre. Allow primer to dry until touch dry – approx. 15 minutes @ 25°C. Prime only the areas that will be covered with the Conwrap in a working day. Areas not covered within 24 hours must be reprimed. June 2014


Technical Dayta Sheet Compedium
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