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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 ROOFING WATERSTOPS WATERPROOFING JOINT FILLERS TIMBER FLOORING ALPHABETICAL High performance, high strength, very low shrinkage, patch repair mortar Uses For the reinstatement of localised patch repairs and larger areas where suitable reinforcement is incorporated. Renderoc HB70 is alkaline in nature and will protect embedded steel reinforcement. It is specifically designed for locations where high build and high compressive strengths are required or in locations where good abrasion resistance is necessary. The mortar is suitable where resistance is required to chlorides and carbon dioxide. Important Note 1: Where compatibility with lower strength concrete is required, but low permeability and high-build characteristics are important, Renderoc HB25 or Renderoc HB40 should be used. When Renderoc HB70 is used in conjunction with Impressed Current Cathodic Protection or Norcure Realkalisation and Desalination methods, the substrate bonding primer should be an OPC: Water slurry mixed at a 2:1 ratio. Polymer bonding agents should not be used. No steel primer should be applied. Please refer to Parchem for further advice. Important note 2: Renderoc HB70 is suitable for use with Galvashield XP incipient anode protection, with a resistivity <15,000 Ω cm @ 28 days. Description Renderoc HB70 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 repair mortar. The material is based on Portland cement, graded aggregates, special fillers and chemical additives and is polymer modified to provide a mortar with good handling characteristics, while minimising water demand. The hardened product exhibits excellent thermal compatibility with concrete and outstanding water repellent properties. The low water requirement ensures fast strength gain and long-term durability. Technical Support Parchem offers a technical support service to specifiers, end-users and contractors, as well as on-site technical assistance. INDEX 18 Technical Data Sheet Advantages „ High strength and high abrasion resistance „ High build repairs „ Exceptional system of shrinkage compensation, March 2014 Page 1 provides long-term dimensional stability „ L ow permeability provides sound protection against carbon dioxide and chlorides „ Can be applied by the wet or dry spray process for fast, exceptionally high build repairs with enhanced characteristics „ Suitable for internal and external use „ P re-bagged to overcome site-batched variations - only the site-addition of clean water required „ Contains no chloride admixtures „ Potable water approved - complies to AS/NZS 4020:2005 „ Maximum compatability with concrete of compressive strengths >45 MPa Design Criteria Renderoc HB70 is designed for vertical or horizontal use. It can be applied up to 40 mm thickness in vertical sections. Greater thickness can be achieved in small pockets or by the use of formwork. In horizontal locations, Renderoc HB70 can be applied up to 150 mm thickness. Thicker sections can be built up in layers. The material should not be applied at less than 5 mm thickness. Thicknesses greater than those nominated in large areas can be achieved by spray application. Specification Clause The polymer modified shrinkage-compensated reinstatement mortar shall be Renderoc HB70 a single- component cement-based blend of powders to which only the siteaddition of clean water shall be permitted. The cured mortar shall achieve 70 MPa compressive strength and 10 MPa flexural strength at 28 days. Fosroc® Renderoc HB70 March 2014


Technical Dayta Sheet Compedium
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