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Topics In Concrete
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Q. What is silica fume? A. Silica fume is very fine noncrystalline silica produced in electric arc furnaces as a byproduct of the production of elemental silicon or alloys containing silicon.(ACI CT). The average size of a silica fume particle is about 100 times smaller than an average portland cement particle. It acts as a mineral filler and also as a pozzolan, leading to concrete of high strength and low permeability. Silica fume is marketed in different forms: as-produced, densified or compacted, and slurried. References: SP-1(02); ACI CT-23; ACI 234R-06; E3-13; ASTM C1240 Topics in Concrete: Silica Fume; Concrete Fundamentals; Materials; Pozzolan
Q. What is silica fume?
A. Silica fume is very fine noncrystalline silica produced in electric arc furnaces as a byproduct of the production of elemental silicon or alloys containing silicon.(ACI CT). The average size of a silica fume particle is about 100 times smaller than an average portland cement particle. It acts as a mineral filler and also as a pozzolan, leading to concrete of high strength and low permeability. Silica fume is marketed in different forms: as-produced, densified or compacted, and slurried.
References: SP-1(02); ACI CT-23; ACI 234R-06; E3-13; ASTM C1240
Topics in Concrete: Silica Fume; Concrete Fundamentals; Materials; Pozzolan