TM BETOCRETE-C18_engl_2212.pdf
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<h1>TM BETOCRETE-C18_engl_2212.pdf</h1> <p>SCHOMBURG GmbH & Co. KG <br />Aquafinstrasse 2–8 <br />D-32760 Detmold (Germany) <br />phone + 49-5231- 953-00 <br />fax <br />+ 49-5231- 953-333 <br />email export@schomburg.de <br />www.schomburg.com</p> <p>BETOCRETE®-C18 </p> <p>Technical Data Sheet</p> <p> </p> <p>Crystalline waterproofing, retarding & high-range, water-reducing, <br />super plasticizing concrete admixture</p> <p>Product Description: <br />BETOCRETE-C18 is an integral crystalline waterproofing, retarding & water-reducing admixture <br />based on a blend of synthetic polymers and <br />proprietary ingredients formulated to produce a <br />unique “permanently active” waterproof, highly <br />durable & flowable concrete. <br />Once administered, BETOCRETE-C18 is adsorbed onto <br />the cement particles of the concrete mix introducing <br />a powerful deflocculating behaviour that effectively <br />reduces water demand, increases both early & ultimate <br />strengths and significantly improves both physical & <br />mechanical properties of the resultant concrete. The <br />active ingredients - in presence of moisture/water <br />- react with by-products resulting from the cement <br />hydration to create insoluble crystalline formations <br />throughout the pores and capillary matrix of the <br />concrete. Fully cured BETOCRETE-C18 concretes <br />exhibit a significant reduction in water penetration <br />limiting it to the first few millimeters from the surface. <br />The hardened concrete is thus resistant against deeper <br />water penetration and any soluble salts that may be <br />detrimental to the concrete or reinforcement steel. <br />Future static cracks (up to 400 microns) developed <br />in the concrete due to settlement, shrinkage or similar <br />effects are automatically filled with fresh crystal <br />formations once exposed to moisture or water, hence <br />the structure’s waterproof properties are reinstated. <br />Primary Uses: <br />BETOCRETE-C18 is used to produce cast-in-situ <br />crystalline waterproofed concretes where high water <br />reduction and extended workability times are required. <br />Typical applications include: <br />• Water-retaining structures like potable water tanks <br />and reservoirs, sewage treatment plants and septic <br />tanks. <br />• Water excluding structures like dams, retaining walls <br />and elevator pits. <br />• Tunnels and under passes. <br />• Waterproofed basements & foundations.</p> <p>•M <br /> arine structures like quay walls, piers, dry docks <br />and ship building yards. <br />• Mass concrete works. <br />Advantages: <br />• Permanently active, long-term, waterproof solution. <br />• Self seals – upon exposure to moisture/water – <br />static cracks up to 400 microns. <br />• Denser concrete, improved water tightness & <br />protection to reinforcement from water-borne salts. <br />• Effective reduction of mixing water (up to 30 %) <br />• Withstands high water pressures (up to 14 bars). <br />• Improved workability, placing & pumping. <br />• Liquid form: easy, lump-free dispensing & dispersion. <br />• Improved physical & mechanical properties of <br />concrete. <br />• Improved surface finish. <br />• Reduced risk of segregation, shrinkage, bleeding <br />& creep. <br />• Water-based, non-flammable, non-toxic, chloride-free <br />and non-corrosive. <br />Standards: <br />BETOCRETE-C18 complies with the requirements of: <br />• EN 934 Part 2 Table 9 <br />• ASTM C- 494, Type G <br />(EN 943 Part 2 Tables 1, 11.1 and 11.2) <br />• IS 9103 <br />Typical Properties: <br />Appearance: <br />Clear to hazy liquid <br />Specific Gravity: <br />1.28 ± 0.005 @ +20 °C <br />Air-entrainment: <br />Less than 1 % additional air <br /> is entrained. <br />Chloride content: <br />Nil <br />Setting Times: <br />Initial & final setting times will <br /> <br />be extended when used at <br /> the recommended dosages <br /> <br />and depending on mix <br /> design. <br />Permeability: <br />Resultant concrete is <br /> permanently waterproofed <br /> <br />against water ingress through</p> <p> <br />static cracks up to <br /> 400 microns. <br />Water-reduction: <br />Up to 30% reduction of <br /> mixing water <br />Compatibility: <br />Compatible with all types of <br /> Portland cement including <br /> SRC. <br />Mechanical properties: All mechanical properties, <br /> <br />early & ultimate compressive <br /> strengths, flexural strengths, <br /> <br />tensile strengths will improve. <br />Dosage Range: <br />Dosage is influenced by cement type, mix design, <br />quality of used materials, ambient temperatures and <br />specific requirements. Site trials must always be carried <br />out to determine optimum dosage. <br />Dosage: Typically between 2.0 – 3.0 % by weight of <br />cement. <br />Dispensing: <br />BETOCRETE-C18 should be added to the mixing water <br />or directly to the mixed concrete. Do not add directly <br />to the dry mix or cement. For proper administration an <br />automatic dispenser is recommended. <br />Overdosing: <br />An overdose of BETOCRETE-C18 may result depending on dosage - in increased workability and <br />extended setting time. Overdosed concrete must be <br />protected against direct sunlight and water evaporation.</p> <p>Packaging: <br />BETOCRETE-C18 is supplied in 20 litre pails, <br />200 litre drums and 1,000 litre IBCs. <br />Storage & Shelf-life: <br />BETOCRETE-C18 in original unopened containers has <br />a shelf-life of 18 months when stored in a dry and frostfree environment above +15 °C. <br />Special Advice: <br />• Concrete modified with BETOCRETE-C18 may tend <br />to effloresce depending on mix design. <br />• It is recommended to perform compatibility tests with <br />other admixtures as required. <br />• Aggregates should have a continuous sieve-line. <br />• When using CEM II or CEM III grades the long-term <br />efficiency of BETOCRETE-C18 may be restricted in <br />special cases as well as when pozzolanic concrete <br />additives are used. <br />Health and Safety: <br />• BETOCRETE-C18 is non-flammable, non-toxic & <br />non-corrosive. <br />• Splashes should be washed with water <br />• For ecology, follow the local regulations. <br />• BETOCRETE-C18 is not dangerous during <br />transportation.</p> <p>Curing: <br />Concrete should be cured in accordance to applicable <br />European Norms or ACI recommendations. Alternatively <br />use any of the SCHOMBURG curing agents range; <br />REMICURE. <br />Cleaning: <br />Dispensers, hoses, equipment and tools are easily <br />cleaned with water. Spills must be contained and <br />removed to industrial waste in accordance with local <br />environmental laws. Please always consult local <br />legislative authorities.</p> <p>This technical data sheet is a translation from German and does not consider local building codes or legal requirements. It shall be used as general reference for the product. <br />Legally binding is only the latest German technical data sheet or the latest data sheet from one of our foreign subsidiaries inside their sales territory.</p> <p>22/12 AF/AI/JD</p>
