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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 58 Technical Data Sheet High performance epoxy resin blow hole and repair fairing mortar Uses For filling in blow-holes, and eliminating minor irregularities in new and old concrete, prior to the application of Nitomortar and Nitocote epoxy systems. Advantages „ Non-slump, can be applied to vertical surfaces and trowelled into concrete blow-holes „ Excellent bond strength to virtually all substrates including saturated surface dry (s.s.d.) concrete „ Smooth paste consistency is easy to apply and finish „ Reduced usage of subsequent coatings and mortars „ Pre-weighed components ensure consistency Description Nitomortar BH is a three component thixotropic material based on superior solvent-free epoxy resin systems. The material is supplied in pre-weighed quantities ready for on-site mixing and use. Nitomortar BH can be applied to damp surfaces and quickly cures to form a surface ready for overcoating. Design criteria Nitomortar BH can be applied up to 3 mm thickness on vertical and overhead locations in a single application without the use of formwork. Greater thicknesses than those specified can be achieved by application of subsequent layers. Consult your local Parchem sales branch for further information. For higher build characteristics to vertical or overhead locations, Nitomortar 908, EL or EL-HB are recommended. Technical support Parchem offers a technical support package to specifiers, end-users and contractors, as well as on-site technical assistance. Properties For filling in blow-holes, and eliminating minor surface irregularities. Pot life: 30 minutes @ 25°C Initial hardness: 4 hours @ 25°C Minimum “back to service” 6 hours @ 25°C time: Full cure: 7 days @ 25°C Note: cure times will increase by a factor of 2 for each 10°C reduction in temperature. Minimum application 5°C temperature: Specification Clause Epoxy resin based blow hole repair and fairing mortar The epoxy resin based fairing mortar shall be Nitomortar BH, a three component solvent-free epoxy resin mortar. Application Instructions Preparation Clean the surface and remove any dust, unsound or contaminated material, plaster, oil, paint, grease, corrosion deposits or algae. The surface should preferably be prepared using highpressure water jetting or light abrasive blasting, followed by thorough washing to remove dust and remaining particles. 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. No independent priming system is required. Mixing Care should be taken to ensure the Nitomortar BH is thoroughly mixed to produce a fully homogenous trowellable mortar. Nitomortar BH can be mixed by hand or with a slow speed drill fitted with a suitable spiral stirrer. The base and hardener components should each be stirred thoroughly in order to disperse any settlement before mixing them together. Generally the entire contents of the base and hardener should be emptied into a suitable mixing container and mixed for 2 minutes. After which the fillers can be added followed by a further 2 minutes mixing. Smaller quantities or varying consistencies can be mixed on-site by mixing the base and hardener at a 2:1 ratio by volume followed by the addition of filler and further mixing. Fosroc® Nitomortar BH December 2009


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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