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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 Properties The values obtained are for the Dekguard Elastic system applied at the minimum recommended application rate. Test method Typical result Volume solids 49% Elongation at Break (ASTM D412): > 400% Carbon dioxide diffusion resistance (AS/NZS 4548.5-1999): Equivalent thickness of air (R), m: > 150 metres (Note: To protect concrete from carbonation, R must be at least 50m - Klopfer criteria) Equivalent thickness of 30 MPa concrete cover (Sc): > 380 mm CO2 Diffusion Coeffiecient, cm²/sec: 3.8x10-07 Water vapour transmission resistance (AS/NZS 4548.5-1999) Vapour Transmission Rate: 40.4g/m²/24hr Equivalent Thickness of Air (Sd) m: <1 Vapour Diffusion Coefficient cm²/sec: 1.3x10-04 Water Transmission Resistance (AS/NZS 4548.5-1999) 14g/24hr/m²/KPa Chloride ion diffusion coefficient (AS/NZS 4548.5-1999): @147 days 5.5 x 10-14 m²/sec Incipient crack spanning capability @ 400 microns dft - static test (ASTM C836-84 (modified) 20°C: 8 mm 0°C: 4 mm -15°C: 1.3 mm Tear resistance (ASTM D624-84): 12 N/mm² Fire testing (BS 476, Pt 7: 1987) - Spread of flame: Class 1 Dynamic crack bridging capability, 0 mm - 1 mm - 0 mm cycling 20°C: 20,000 cycles (no failure) 0°C: 15,000 cycles (no failure) -15°C: 4,000 cycles (no failure) INDEX 156 Page 2 Fosroc® Dekguard Elastic Application Instructions Preparation All surfaces should be dry and free from contamination such as oil, grease, loose particles, decayed matter, moss, algal growth, laitance, and all traces of mould release oils and curing compounds. (Note: it is not necessary to remove Fosroc’s Nitobond AR curing membrane prior to the application of Dekguard Elastic).This is best achieved by lightly grit-blasting the surface. Where moss, algae or similar growths have occurred, treatment with a proprietary biocide should be carried out after the grit-blasting process. Where application over existing sound coatings is required, trials should be conducted to ensure compatibility and retention of the bond between the underlying coating and the substrate. For further advice, consult your local Parchem sales office. It is essential to produce an unbroken coating of Dekguard Elastic. To ensure this is achieved, surfaces containing blow-holes or similar areas of pitting should first be filled using Renderoc FC, a cementitious fairing coat (for further details, refer to separate Technical Data Sheet). Renderoc FC should be allowed to cure for approximately 48 hours, depending on ambient conditions, before the application of Dekguard Elastic. Application In order to obtain the protective properties of the Dekguard Elastic system, it is important that the correct rates of application and overcoating times are observed. Nitoprime DG Dekguard Elastic Number of coats: Flood coat 2 Theoretical application rate per coat: 0.4 litres/m² 0.4 litres/m² Theoretical wet film thickness per coat: N/A 400 microns Overcoating time - @ 20°C: 2 hours 16 hours


Technical Dayta Sheet Compedium
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