alleryStart learning →Which Bogue compound, on reaction with water, is mainly responsible for the EARLY strength of concrete?
AC3A (tricalcium aluminate)
BC2S (dicalcium silicate)
CC3S (tricalcium silicate)
DC4AF (tetracalcium aluminoferrite)
Answer & Solution
Correct answer: C. C3S (tricalcium silicate)
1. §1.5(b): 'C3S readily reacts with water, producing more heat of hydration and is responsible for early strength of Concrete.'
2. §1.5(c) contrasts: 'C2S hydrates more slowly, produces less heat of hydration and is responsible for later strength of Concrete.'
3. C3A and C4AF hydration products do not contribute to strength.
_Source: IGNOU ET-522 Block-1 Unit-1 Cement, §1.5(b)-(c), p. 8_
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