Xiamen Fairmain Industry Co.,Ltd

xiamen, China

We offer silica fume, silica fume is widely used in concrete field especially high: performance project, such as bridge, airport, hydropower station. Seawall, railway projects. The main functions as follow: (1)enhance the mechanical properties of concrete the most important character for concrete: high strength and early strength has been used in substructures of high-performance concrete (2)improve the durability of concrete significant improvements can be seen in the permeability resistance, abrasion resistance, anti-corrosion against chloridion, refractorily and anti-freezing of concrete (3)enhance constructability improve shotcrete, increase early strength, control temperature contractors can take advantage of the properties of silica-fume concrete to expedite projects or to achieve properties that might otherwise be impossible to achieve. (4)increase density, decrease freight cost by densifying silica fume utilizing the russil tech process allows the media to become more flowable and controllable. Using advanced technology, densities can be increased from 100kgm³ to 700 kgm³ , and is still able to be dispersed back to its natural state. densified microsilica sio2: 90% min. specific surface area(b. E. T): 18, 000-23, 000sqmkg pozz. Activity: 110% bulk density: 550-700kgsm3. packing: 1000kgs per jumbo bag with wooden pallet or as customers' requirement. qualify: sgs certificate with astm-c1240 standard payment terms: tt or lc delivery time: within 15-30 days after the payment.

We offer high quality microsilica with grade 92% sio2, it is the ideal admixture in high performance concrete, high intensity concrete, shotcrete, reinforced concrete, premixed concrete, blast furnace cement, cement portland and etc. sio2(silicon dioxide) min. 92.0% c(carbon) max. 0.7% fe2o3 (iron oxide) max. 0.1% al2o3(aluminium oxide) max. 0.3% cao(calcium dioxide) max. 0.3% mgo(magnesium dioxide) max. 0.2% k2o(potassium dioxide) max. 0.3% na2o(sodium dioxide) max. 0.2% p2o5(phosphorus pentoxide) max. 0.1% so3(sulphur trioxide) max. 0.2% cl (chloride) max. 0.1% moisture content(h2o ) max. 0.5% loss on ignition(l.o.i) max. 0.5% percent retained on 45μm (325 sieve) max. 0.5% bulk density 250-300kgm3 and 550-650kg m3 benefits increased concrete service life improved strength increased modulus of elasticity reduced permeability thereby increasing durability increased resistance to sulfate attack increased resistance to alkali-silica reactivity

We offer high quality microsilica with grade 92% sio2, it is the ideal admixture in high performance concrete, high intensity concrete, shotcrete, reinforced concrete, premixed concrete, blast furnace cement, cement portland and etc. 1. Microsilica (or silica fume, silica powder) is a byproduct of producing silicon metal or ferrosilicon alloys. Mine electric furnace generates mass very reactive sio2 and si gas. The gas was oxidation and condensation precipitation with air rapidly. 2. Microsilica, build a durable future into the infrastructure of seaport, high building, reservoir dam, railway, driver road, bridge, metro, tunnel, airport runway, coal lane and etc., 3. Microsilica is used in high performance concrete for improving the intensity and durability, more and more people are widely applying microsilica in high performance concrete for national infrastructure. High performance concrete with microsilica additive turn out strong toughness, higher antifreeze, wear resistance, chemical resistance, extend the life of the building and reducing the maintenance and testing cost. In recent year, there are uncommon examples of destroyed and collapsed bridges and piers. Most of them are severe erosion caused by sea. Performance: can prevent concrete from the corrosive chloride and seawater improving the high resistivity of concrete improving the wear resistance of building, like flight runway, aircraft carrier deck, high speed way can improve strong chemical corrosion resistance 4. Microsilica is used in high intensity concrete make the building designer more creative project optional with microsilica additive in high intensity concrete. For example, with microsilica additive in high intensity concrete will avoid many pillar in high-rise building design and then increase the using space of building and make greater span prestressed beams.

We are offering micro silica. 1.introduction silica fume ia also called micro silica, it is a very fine pozzolanic material, composed of amorphous silica produced by electric arc furnaces as a by-product of the production of elemental silicon or ferro silicon alloys. This micro silica used in refractory has a minimum of 94% content of silica, and this undensified micro silica reaches national first grade standard, 80% of granularity is less than 0.1 um with a maximum of 0.3 um. 2.application microsilica in refractory is a highly effective pozzolanic material, the functions of adding microsilica are as follow: enhancing the fluid of pouring refractory. Reducing the volume of used water. Be easy to shape. Raising the production efficiency. Rising the compact and intensity of refractory. Enhance elevated temperature strength and thermal shock of refractory. 3.features 1) high electrical resistivity. 2) low permeability. 3) high reactive pozzolan. 4) high temperature strength. 5) low chloride ion diffusion. 4.specification sio2: 92%-96%. loi: 3% max. Bulk density: 200-350kgsm3.