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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 37 Fosroc® Patchroc GP Floor / pavement patch repair, fast set mortar (15-75 mm depth) Uses For the emergency reinstatement of localised patches in concrete pavements, airport aprons, access ramps, roadways and many industrial situations such as gangways and warehouse floors. Patchroc GP is particularly useful where interruption to traffic must be minimised. The product is alkaline in nature and will protect embedded steel reinforcement. It may be used internally and externally. For the reinstatement of large areas of concrete pavements and floors, the use of Paveroc is recommended. Advantages „ Rapid strength gain - will accept traffic in 2 - 4 hours „ High strength, abrasion and weather resistance „ Single component product eliminates site batching and requires only the site addition of clean water „ Excellent bond to the concrete substrate „ Shrinkage compensated „ Suitable for patches up to 75 mm deep Description Patchroc GP 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, high strength patch repair mortar which virtually self-compacts. The material is based on a blend of cements, graded aggregates, special fillers and chemical additives to provide a mortar with good handling characteristics, while minimising water demand. Patchroc GP exhibits excellent thermal compatibility with concrete and good water repellent properties. The low water requirement ensures fast strength gain and long-term durability. Technical Support Parchem offers a comprehensive range of high performance, high quality concrete repair and construction products. In addition, Parchem offers a technical support service to specifiers, end-users and contractors, as well as on-site technical assistance. Design Criteria Patchroc GP is designed for horizontal use. It can be applied to small areas of concrete requiring not more than 20 litres of patching material. The material should not be applied at less than 15 mm thickness. Patchroc GP may be applied up to a maximum thickness of 75 mm. Thicker sections can be reinstated using Patchroc C. Consult your local Parchem sales office for further information. Properties (Typical Results) The following results were obtained at 23°C. Compressive Strength December 2009 Page 1 Consistency 2hrs 4hrs 1 Day 7 Days 28 Days Stiff Trowellable 32 40 48 58 67 Trowellable 27 35 43 53 60 Flowable 25 30 38 47 55 Working life: 25 - 30 minutes @ 23°C (Remixing can occur up to 15 minutes without any adverse effects) Setting time: Initial set: Final set: 35 - 50 minutes @ 23°C 45 - 60 minutes @ 23°C Traffic time: Pedestrian/Vehicular: 2 - 4 hours @ 23°C Application Instructions Preparation Saw cut or cut back the extremities of the repair locations to a depth of at least 5 mm to avoid feather-edging and to provide a square edge. Break out the complete repair area to a minimum depth of 15 mm up to the sawn edge. Clean the surface and remove any dust, unsound or contaminated material, plaster, oil, paint, grease, corrosion deposits or algae. Where breaking out is not required, roughen the surface and remove any laitance 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. Expose fully any corroded steel in the repair area and remove all loose scale and corrosion deposits. Steel should be cleaned to a bright condition paying particular attention to the back of exposed steel bars. Grit-blasting is recommended for this process. Where corrosion has occurred due to the presence of chlorides, the steel should be high pressure washed with clean water immediately after grit-blasting to remove corrosion products from pits and imperfections within its surface. The prepared area should be blown clean with oil-free compressed air. March 2014


Technical Dayta Sheet Compedium
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