Tag Archive for Tag: Silica fume

Tag: Silica fume Silica Fume (Microsilica)

Silica fume, or microsilica, is a condensed gas, the by-product of metallic silicon or ferrosilicon alloys produced by electric arc furnaces. (While both terms are correct, microsilica (MS) is a less confusing name.) The Canadian standard CAN/ CSA-A23.5-M86, ‘‘Supplementary Cementing Materials,’’ limits amorphous SiO2 to a maximum of 85% and oversize to 10%. Many MS contain more than 90% SiO2. MS has an average diameter

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