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what is silica fumes or micro silica? and whr is it used?
wat r its advantages?
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Answer Posted / kemira
Silica fume (also called microsilica), is made that during smelting silicon iron and industrial silicon, after the oxidation of silicon vapor discharged from the flue, the amorphous and powdered silicon dioxide (Sio2) is collected by specially designed dust collector. The average particle size of the silica fume is 0.1-0.15 μm, which is one of the several hundred points of the average particle size of the cement. The surface area of the surface is 15-27 m2/g, and has very strong surface activity.
Application:
High strength concrete, unshaped refractory material, dry mixed mortar (premixed), high strength non shrinkage grouting material, wear-resistant industrial floor, oil well cementing slurry, mortar, polymer mortar, thermal insulation mortar, impermeable concrete, self leveling concrete, concrete, concrete preservatives, compacting agent of cement based polymer waterproofing agent, rubber; plastics, unsaturated polyester, paint, coatiing and other polymer material reinforcement, and modified ceramic products.
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