Everything about Calcium Silicate totally explained
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Calcium silicates are a set of four compounds obtained by reacting
calcium oxide and
silica in various ratios. These have compositions
Ca3O.SiO4,
Ca2SiO4,
Ca3Si2O7 and
CaSiO3. Calcium orthosilicate is a white powder with the chemical formula Ca
2SiO
4. It has a low
bulk density and high physical
water absorption. It is used as an anti-caking agent and an
antacid. A white free-flowing powder derived from
limestone and
diatomaceous earth, calcium silicate has no known adverse effects to health. It is used in roads, insulation,
bricks, and roof tiles.
High temperature insulation
Industrial grade piping and equipment insulation is often fabricated from calcium silicate. Its fabrication is a routine part of the curriculum for insulation
apprentices. Calcium silicate competes in these realms against rockwool as well as proprietary
insulation solids, such as
perlite mixtures and
vermiculite bonded with
sodium silicate.
Passive fire protection
One of the most successful materials in
fireproofing in
Europe is calcium silicate. Where
North Americans use spray fireproofing
plasters, Europeans are more likely to use cladding made of calcium silicate. Calcium silicate is easily damaged by water. Therefore,
silicone treated sheets are available to fabricators to mitigate potential harm from high
humidity or general presence of
water. Fabricators and installers of calcium silicate in
passive fire protection often also install
firestops.
Calcium silicate in the steel industry
It is also a constituent of the
slag that's produced when molten
iron is made from
iron ore and
calcium carbonate in a
blast furnace.
As a product of sealants
When
sodium silicate is applied as a sealant to cured
concrete or the shells of fresh
eggs, it chemically reacts with calcium hydroxide or carbonate to form calcium silicate hydrate, sealing pores with a relatively impermeable material.
Further Information
Get more info on 'Calcium Silicate'.
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