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Silica fume is an ultrafine airborne material with spherical particles less than 1 μm in diameter, the average being about 0.1 μm. This makes it approximately 100 times smaller than the average cement particle. Because of its extreme fineness and high silica content, silica fume is a very effective pozzolanic material.
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Manufacturer of silica fume, a mineral admixture.
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Silica fume is used in a variety of cementitious (concrete, grouts and mortars), refractory, elastomer and polymer applications. Silica fume is a mineral admixture, composed of submicron particles (100 to 150 times smaller than a grain of cement) of amorphous silicon dioxide.
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MICROSILICA, SILICA FUME FOR REFRACTORY In the last three decades, microsilica has been widely used as filler in refractory materials, particularly in castables.
Silica fume – Wikipedia
Silica fume, also known as microsilica, (CAS number 69012-64-2, EINECS number 273-761-1) is an amorphous (non-crystalline) polymorph of silicon dioxide, silica.
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