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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 34 Technical Data Sheet An acid resistant repair mortar for use in highly corrosive environments based on sustainable technology Uses Renderoc G is a new generation repair mortar material based on sustainable technology that offers outstanding resistance to the attack of aggressive acids and chemicals. Renderoc G is a versatile material that can be used for long term protection in a number of different aggressive environments which include: „ Use as an acid resistant grout for back fill of lining systems „ An acid resistant grout for use with impressed current cathodic protection „ For the protection of concrete deteriorated by soft water errosion Advantages „ Has excellent long term resistance to acidic conditions „ Is versatile material that can be hand/ trowel applied as well as spray applied for large repairs „ Low shrinkage material „ Excellent compressive and tensile strength values even when immersed in long term acid environments „ Outstanding adhesive properties „ Renderoc G is based on industrial cementitious byproducts and contains a minimal amount of cement providing an environmentally friendly material „ Potable water approved - complies to AS/NZS 4020:2005 Renderoc G Untreated 20% Sulphuric Acid @ 28 days Immersion Properties The following results were obtained at a water:powder ratio of 0.157 and temperature of 20°C. Test method Typical result Compressive strength (AS 1478.2 - 2005) 4 MPa @ 1 day 20 MPa @ 7 days 35 MPa @ 28 days 40 MPa @ 56 days 56 day water cure, then immersed for 28 days in 20% Sulphuric Acid 26 MPa Flexural strength Modulus of Rupture (AS1012.11-2000): 3.7 MPa @ 7 days 5.2 MPa @ 28 days 5.3 MPa @ 56 days 56 day water cure, then immersed for 28 days in 20% Sulphuric Acid 4.2 MPa Indirect tensile strength (AS 1012.10 - 2000): 3.1 MPa @ 7 days 4.0 MPa @ 28 days 4.2 MPa @ 56 days 56 day water cure, then immersed for 28 days in 20% Sulphuric Acid 3.8 MPa Note: Compressive strengths stated above were measured using cube samples. Test results obtained will vary if testing is carried out to an alternative standard or sample dimensions are used. Application Instructions Preparation Clean the surface and remove any dust, unsound concrete, oil, paint, grease, corrosion deposits or algae. Roughen the surface and remove any laitance by light scabbling or grit blasting. Where possible, saw cut or cut back the extremities of the repair locations to a depth of 10mm to avoid featheredging and to provide a square edge. 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. Abrasive blasting is recommended for this process. Reinforcing steel priming Apply one full coat of Nitoprime Zincrich and allow to dry before continuing. If any doubt exists about having achieved an unbroken coating, a second application should be made and, again, allowed to dry before continuing. Substrate priming Onto the prepared concrete surface the Nitobond EP primer should be used for hand or trowel applied applicatioins. The primer must be tacky when the Renderoc G is applied. If the primer has dried prior to the Renderoc G being applied then another primer coat must be applied. Fosroc® Renderoc G March 2014


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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