Bogues Compounds

◆Bogues Compounds◆

Bogues Compounds when water is added to cement it react with the ingredients of the cement chemically & results in the formation of complex chemical compounds terms as BOGUES compounds. which are not for simultaneously.

1. Tri-Calcium Aluminate (C3A)= 8-12%

2. Tetra Calcium Alumino Ferrate (C4AF)= 6-10%

3. Tri-Calcium Silicate (C3S)= 30-50%

4. Di-Calcium Silicate (C2S)= 20-45%

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1. Tri-Calcium Aluminate (C3A)

Formed in 24 hrs of addition of water
Max. evolution of heat of hydration
Check setting time of cement
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2. Tetra Calcium Alumino Ferrate (C4AF)

Formed within 24 hrs of addition of water
High heat of hydration in initial periods
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3. Tri-Calcium Silicate (C3S)

Formed within week
Responsible for initial strength of cement
Contribute about 50-60% of strength
Content increase for the pre-fabricated concrete construction, Cold weathering construction.
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4. Di-Calcium Silicate (C2S)

Last compound formed during hydration of cement responsible for progressive later stage strength
Structure requires later stages strength proportion of this component increase
e.g. hydraulic structures, bridges.
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●Type-of-cements

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