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Q: Which of the following is not the product of hydration of ordinary Portland cement?
  • A. Calcium Hydroxide
  • B. Calcium Decahydrate
  • C. Tetracalcium Aluminoferrite
  • D. Di-calcium Silicate
Correct Answer: Option B - Product of hydration of cement– • Calcium silicate hydrate • Calcium hydroxide • Calcium aluminate hydrate • Ethringite
B. Product of hydration of cement– • Calcium silicate hydrate • Calcium hydroxide • Calcium aluminate hydrate • Ethringite

Explanations:

Product of hydration of cement– • Calcium silicate hydrate • Calcium hydroxide • Calcium aluminate hydrate • Ethringite