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Silica fume... what
is it?
Silica fume is a mineral admixture, composed of
submicron particles of silicon dioxide, manufactured as a co-product from
the production of silicon and ferrosilicon metal. When added to concrete,
silica fume acts as both a filler, improving the physical structure by
occupying the spaces between the cement particles and as a 'pozzolan,'
reacting chemically to impart far greater strength and durability to
concrete. Bridge construction, marine structures, parking structures, water
supply and sewage facilities all benefit from the use of microsilica (silica
fume). The special properties of microsilica concrete give benefits in fresh
concrete properties, so rheology improvements give benefits for concrete
pumping and stability of the concrete mix. Special concretes like high
strength concrete, light weight concrete (LWC, LWAC), shotcrete and low
permeability concretes are better made with microsilica
Our silica fume powder is gray color, and is packaging big-bag
option.We sell densified and undensified microsilica. Silica fume in
accordance with international standards.
The Oresund Bridge is 1092 metre long
with a main span of 490 metre. The pylons are 203.5 metre tall. Silica fume
was used for the entire Oresund Fixed Link Project.
Technical info
Sorts of silica fume:
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Concrete manufacturing |
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Cement manufacturing |
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Dry mortars |
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Production of fibrous cement materials |
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Ceramic materials |
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Fire proof and insulating materials for metallurgy |
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Rubber products |
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Household chemistry |
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Matches manufacturing |
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In tank trucks (dry material, water-fume suspension) |
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In big-bags from 300 up to 1150 kg (depend on sort of fume) |
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