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Q: Hydration of cement is due to chemical action of water with
  • A. Tricalcium silicate and dicalcium silicate
  • B. Dicalcium silicate and tricalcium aluminate
  • C. Tricalcium aluminate and tricalcium alumino ferrite
  • D. All option are correct
Correct Answer: Option D - The chemical reaction between cement and water is known as hydration of cement. The reaction takes place between the active components of cement (C₄AF, C₃A, C₃S and C₂ S) and water.
D. The chemical reaction between cement and water is known as hydration of cement. The reaction takes place between the active components of cement (C₄AF, C₃A, C₃S and C₂ S) and water.

Explanations:

The chemical reaction between cement and water is known as hydration of cement. The reaction takes place between the active components of cement (C₄AF, C₃A, C₃S and C₂ S) and water.