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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 Specification Clause Low viscosity crack injection grouting system The injection grouting material shall be a low-viscosity epoxy resin, with high bond strength to wet or dry concrete, high compressive tensile and flexural strengths, and offering chemical and weathering resistance. Specially formulated for injection of cracks down to 0.2 mm at the surface, tapering down to 0.1 mm internally. Use in conjunction with a surface sealing two part epoxy resin and hardener material for setting and sealing around injection flanges and surface of cracks. Instructions For Use Surface preparation All contact surfaces must be free from oil, grease, free standing water or any loosely adherent material. All dust must be removed. Crack surface seal Nitomortar AP is used to bond the injection flanges to the substrate and to seal the face of the crack (see current Nitomortar AP Technical Data Sheet for additional application / mixing instructions). Application of the surface seal Immediately after mixing, apply a small amount of the Nitomortar AP product to the underside of each flange, making sure that the valve will not be blocked and place the flange centrally over the crack. Flanges should be placed between 200 mm and 500 mm apart dependent on crack size, along the length of the crack. Additional surface seal should be applied around each flange edge and to the remainder of the crack between the flanges to ensure a resin tight seal to the substrate. Where cracks can be sealed on one side only, flanges should be placed at centres which are 80% of the depth to which the resin is required to penetrate. Application of the Nitofill LV injection resin can commence as soon as the Nitomortar AP has fully hardened. Injection of the Nitofill LV epoxy resin The Nitofill LV static mixer/hose should be screwed onto the cartridge. The cartridge is then placed into the gun and the outlet end of the hose pushed onto the lowest flange using the adaptor. The contents of the cartridge are then injected until the resin flows from an adjacent flange, or until firm and sustained hand pressure on the gun trigger signifies that no further resin will be accepted. Then pull the barb on the flange away from the base. Remove the liner strip out of the barb on the flange. Hold the base of the flange while removing the liner slip from the barb. This will ensure the flange is not accidentally removed from the substrate. The flange should be in the closed position when the liner slip is pulled totally away from the base. This will prevent material flowing out from the crack. The pressure should be released and the hose disconnected from the flange using the adaptor and tool. The injection hose can then be refixed to an adjacent flange, and more Nitofill LV resin injected. Repeat the process until the entire length of crack has been injected. In the case of cracks which go all the way through a wall or slab, the resin should be injected through alternate flanges on both sides where access is possible. In the case of slabs, injection from the underside takes precedence to top injection. Making good After the Nitofill LV injection resin has set, remove the flanges. These can be knocked off with a hammer. Make good any holes or voids with Nitomortar AP. The existing surface sealant can then be removed using a sharp broad-chisel or by grinding until the original substrate profile is restored. Cleaning All tools and equipment should be cleaned immediately after use with Solvent 10. Limitations The Nitofill LV resin injection system should not be used for cracks where movement is expected to continue. Other measures should be taken to accommodate such movement, ie cutting and forming a movement joint. Contact your local Parchem sales office for further information. Page 2 73 Fosroc® Nitofill LV


Technical Dayta Sheet Compedium
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