Densified Microsilica powder for concrete additive

Densified Microsilica powder for concrete additivesDESCRIPTIONMicrosilica is a high performance concrete additives.Densified microslica powdered product, derivedas a by-product from the production of Ferro Silicon using the arc furnace method. Used in pre-mixed concrete for enhancing mechanical properties of concretes with special performance requirements, including increased strength, reduced permeability, improved abrasion resistance and increased corrosion resistance.TYPICAL USESMicrosilicacan be used to produce all grades of concretes. The chemical and physical properties ofMicrosilica can greatly enhance the strength performance and the bonding properties of concrete.Microsilicacan be used in various applications and projects: Commercial, Civil, Mining and Marine projects.Microsilicais suitable for inclusion in general concrete mix designs and in particular has application in high strength/performance concretes and shotcrete / spray mixes.ADVANTAGESThe addition ofMicrosilica can provide;• Increase compressive strength• Increase abrasion resistance• Enhanced sulphate resistance• Reduces chloride ion permeability• Enhanced resistance to chemical attack and deterioration• Improved durability• Increase bond strengthDOSAGEThe dosage rate forMicrosilica will vary depending on the mix design requirements. Users should determine applicable rates of usage for their purpose. This is best achieved by trial mixes. Typical dose rates range from 5% – 10%.Some users will consider the material a cement replacement, others will consider as additional pozzolanic materialCOMPATIBILITYMicrosilicais compatible and effective in concrete containing all types of Portland, and blended cement which may include Supplementary Cementitious Materials such as Fly Ash and Granulated Ground Blast Furnace Slag.Microsilica is also suitable for use with chemical admixtures such as water-reducing, accelerating and retarding admixtures which comply to AS 1478.1SPECIFICATIONSItemsspecificationAppearanceGray and off-white powderSiO2 (%)85%-90%90%-95%95%minLOI6%max3%max1%maxBulk Density(densified)500-700kgs/m3Moisture (%)3%max1%max1%maxSpecific Surface Area(m2/g)15Retained on 45 micron sieve (%)10%max5%max3%maxPACKAGINGMicrosilicais supplied in 900 kg bulk bags,2bags/palletQuantity in FCL:18MT/20’SAFE HANDLINGMicrosilicais classified as hazardous according to the NOHSC criteria and represents a dust hazard that may cause irritation. Users should consult the MSDS for information regarding health and safety.WARRANTYThe products supplied to be free of material defects and to be of a consistent quality. Should any product be proven to be defective, the liability of the manufacturer shall be limited to the replacement of the product ex-factory.The manufacturer gives no warranty as to the fitness of the products for any particular purpose. The user shall determine the suitability of the product for its intended use.