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 (3CaO.Al2O3 or C3A) -------------------------8-12%
2. Tetra Calcium Alumino Ferrate (4CaO.Al2O3.Fe2O3 or C4AF)----6-10%
3. Tri-Calcium Silicate (3CaO.SiO2 or C3S)---------------------------------30-50%
4. Di-Calcium Silicate (2CaO.SiO2 or C2S)----------------------------------20-45%
2. Tetra Calcium Alumino Ferrate (4CaO.Al2O3.Fe2O3 or C4AF)
1. Tri-Calcium Aluminate (3CaO.Al2O3 or C3A) -------------------------8-12%
2. Tetra Calcium Alumino Ferrate (4CaO.Al2O3.Fe2O3 or C4AF)----6-10%
3. Tri-Calcium Silicate (3CaO.SiO2 or C3S)---------------------------------30-50%
4. Di-Calcium Silicate (2CaO.SiO2 or C2S)----------------------------------20-45%
1. Tri-Calcium Aluminate (3CaO.Al2O3 or C3A)
- Formed in 24 hrs of addition of water
- Max. evolution of heat of hydration
- check setting time of cement
2. Tetra Calcium Alumino Ferrate (4CaO.Al2O3.Fe2O3 or C4AF)
- Formed within 24 hrs of addition of water
- High heat of hydration in initial periods
3. Tri-Calcium Silicate (3CaO.SiO2 or 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.
4. Di-Calcium Silicate (2CaO.SiO2 or 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.
Heat of Hydration of BOGUES Compounds:
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thns for these useful notes baby
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ReplyDeleteIn GATE 2016 (civil) question stated like this" which of the following compound is responsible for initial setting and early strength in cement?"
ReplyDeletein options all the 4 compounds were present. which one is correct?
C3S is responsible for initial setting time and early strength in cement such as first 7 days strength.
Deleteamong c3a and c4af which has high rate of reaction
DeleteC3s
Deletec3a
DeleteC3s
DeleteC3S
DeleteC3a
DeleteC3A
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DeleteAlumina is responsible for early strength or flash setting of cement ..
DeleteC3s
DeleteC3s tricalcium silicate, first 7 day strength is due to c3s.
DeleteC3s
DeleteWater add krne ke just baad kon sa compound react krta h??
DeleteC3A or C4AF
C3A
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ReplyDeleteWhat the order of heat produsing and rate of hydration of Bogue component in cement
ReplyDeleteC3A>C3S>C4AF>C2S
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ReplyDeleteHeat of hydrogen and rate of hydrogen ka increasing order batye
ReplyDeleteRate of hydration ka sequence =>
DeleteC4AF>C3A>C4AF>C2S
Rate of hydration ka sequence=>
DeleteC4AF>C3A>C3S>C2S
thanks for sharing😁😁
ReplyDeleteWhatis bouge compound
ReplyDeleteWhen water is added to cement,a chemical reaction takes place there by forming various complicated chemical compounds known as bogues compounds
DeleteWhich bogus compound has final
ReplyDeletesettings time
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ReplyDeleteA man was far from over and the original resolution was passed in June last week that it was a good language of thermodynamics
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ReplyDeleteWhat is the time of hydration of dicalcium silicate ? And what is the time required to gain ultimate strength by C2S
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ReplyDeletethank you ...just as i wanted
ReplyDeleteHow many calories produced during hydration process of all bogus's compound?
ReplyDeletePlz tell its importance and assumptions
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ReplyDeleteWhat is the sequence of bougue compound of cement,According to heat of hydration ???
ReplyDeleteOrder of heat of hydration-
ReplyDeleteSequence C3A>C3S>C4AF>C2S
Actually these compounds are not formed after reaction with water but they are further after raw materials are burned i.e. they are present in cement powder. They react with water to form CSH gel instead
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