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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 INDEX 2 Technical Data Sheet Fairing mortar screed, to cover surface imperfections, polymer modified (0 mm to 3 mm thickness) Uses Renderoc FC cementitious fairing coat is designed for application in thin layers to produce a fair-faced appearance to concrete surfaces or masonry surfaces in readiness to receive a protective/decorative coating. Surface imperfections up to 3 mm in depth can be filled with the scrape coat application. Voids of greater depth should be separately filled as a prior operation, again limiting the Renderoc FC material thickness to 3 mm. Renderoc FC can be used independently to infill surface imperfections and voids or to render large sections of concrete or masonry at up to 3 mm thickness. It can also be used in association with other Renderoc mortars. Under normal conditions, the product does not require an independent primer or curing membrane. Advantages „ Excellent bond to the concrete substrate „ Easy to use - no independent primer or curing membrane necessary „ Pre-blended to overcome site-batched variations - only the site addition of clean water is required „ Contains no chloride admixtures Standards Compliance Renderoc FC has been approved by the British Board of Agreement, Certificate No. 98/3461. Description Renderoc FC cementitious fairing coat is supplied as a ready to use blend of dry powders which requires only the site addition of clean water to produce a highly consistent cementitious fairing mortar. The material is based on a blend of cements, graded aggregates, special fillers and chemical additives to provide a material with good handling characteristics, while minimising water demand. The product exhibits excellent thermal compatibility with concrete and is fully compatible with other Renderoc mortars and Dekguard coatings. Technical Support Parchem offers a comprehensive range of high performance, high quality construction products. In addition, Parchem offers technical support to specifiers, end-users and contractors, as well as on-site technical assistance. Design Criteria Renderoc FC cementitious fairing coat is designed for vertical and overhead use to infill blow holes, honeycombing and voids up to 3 mm deep in the surface of concrete. Consult your local Parchem sales office for further information. Properties The following results were obtained at a water:powder ratio of 0.3 by weight or 1:3 by volume at a temperature of 20°C. Test method Typical result Coefficient of thermal 7 - 12 x 10-6/°C expansion: Working life: Approximately 20 minutes** Setting time (BS 4550): 30 minutes - 1 hour** Fresh wet density: Approximately 2000 kg/m³ ** Note: working life and setting time will vary dependent on ambient and substrate temperatures and prevailing conditions. Specification Clauses Fairing coat The fairing coat shall be Renderoc FC, a single-component polymer modified cement-based blend of powders to which only the site addition of clean water shall be permitted. The material shall be capable of use without independent priming and curing systems. Applications Instructions Preparation Clean the surface and remove any dust, unsound material, plaster, oil, paint, grease, corrosion deposits or algae. Roughen the surface to remove any laitance and expose the fine aggregate by light scabbling or grit-blasting. Oil and grease deposits should be removed by steam cleaning, detergent scrubbing or the use of a proprietary degreaser. The effectiveness of decontamination should then be assessed by a pull-off test. Renderoc repair mortars require no additional preparation prior to the application of Renderoc FC. No independent priming system is required. The cleaned areas should be blown clean with oil-free compressed air before continuing. All prepared areas should be thoroughly soaked with clean water immediately prior to the application of Renderoc FC. Any residual surface water should be removed prior to commencement. Care should be taken and the work scheduled to ensure the water does not run onto areas of recently applied Renderoc FC less than 12 hours old. Under severe drying conditions repeated soaking may be necessary to ensure the substrate is still saturated at the time of Fosroc® Renderoc FC March 2014


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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