Page 52

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 40 Technical Data Fosroc® Patchroc C Sheet Floor / pavement patch repair, fast set mortar (25-200 mm depth) Uses For the emergency reinstatement of localised deep patches in concrete pavements, airport aprons, access ramps, roadways and many industrial situations such as gangways and warehouse floors. Patchroc C 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 „ S hrinkage compensated „ Suitable for patches up to 200 mm deep Description Patchroc C 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 C 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, the company offers a technical support service to specifiers, end-users and contractors, as well as on-site technical assistance. Design Criteria Patchroc C is designed for horizontal use. The material should not be applied at less than 25 mm thickness. Patchroc C may be applied up to a maximum thickness of 200 mm. The maximum volume in any single pour should be limited to 50 litres. Properties The following results were obtained at 23°C. Compressive strength (MPa) Consistency 2hrs 4hrs 1 Day 7 Days 28 Days Stiff Trowellable 25 32 40 50 60 Trowellable 23 28 35 45 55 Flowable 18 25 33 40 50 Working life: 25 - 30 mins @ 23°C (Remixing can occur up to 15 mins without any adverse effects) Setting time: Initial set: Final set: 35 - 50 mins @ 23°C 45 - 60 mins @ 23°C Traffic time: Pedestrian/ Vehicular: 2 - 4 hours @ 23°C Fresh wet density: Approximately 2300 kg/m3 dependent on actual consistency used. Application Instructions Preparation Saw cut or cut back the extremities of the repair locations to a depth of at least 20 mm to avoid feather-edging and to provide a square edge. Break out the complete repair area to a minimum depth of 25 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. December 2009


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
To see the actual publication please follow the link above