alleryStart learning →In Bogue's compound notation used for Portland cement, the symbol 'C' stands for:
ACaCO3 (calcium carbonate)
BCement clinker
CC3S (tricalcium silicate)
DCaO (calcium oxide)
Answer & Solution
Correct answer: D. CaO (calcium oxide)
1. §1.4 lists the symbols: C for CaO, S for SiO2, A for Al2O3, F for Fe2O3, H for H2O.
2. So 'C' in C3S, C2S, C3A and C4AF always refers to CaO.
3. C3S therefore expands to 3CaO.SiO2 (tricalcium silicate).
_Source: IGNOU ET-522 Block-1 Unit-1 Cement, §1.4 (after Table 1.2), p. 7_
Keep practising Cement
Browse all Cement questions for B.Tech Civil, or explore more Civil Engineering topics.
Related questions
Balance the Bogue calcium silicate hydration: tricalcium silicate plus water → C-S-H gel pType each cement-compound or admixture abbreviation as it appears.Pick the item that does not belong with the other three.Flip the cards and match each Bogue compound symbol to its full name.Per Table 1.5, the maximum permitted FINAL setting time of Ordinary Portland Cement is:Per Table 1.5, the soundness of Ordinary Portland Cement tested by the Le Chatelier methodThe minimum specific surface (by Blaine air permeability) prescribed for Ordinary PortlandAir entraining cement is used principally to improve the resistance of concrete to: