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Q: When water is added to cement
  • A. Heat is generated
  • B. Heat is absorbed
  • C. Chemical reaction is initiated
  • D. Both heat is generated and chemical reaction is initiated
Correct Answer: Option D - When water is added to cement, the chemical reaction take place called hydration and contributes to the final concrete product. The calcium silicates contributes most to the strength of concrete. Tricalcium silicates are responsible for must of the early strength.
D. When water is added to cement, the chemical reaction take place called hydration and contributes to the final concrete product. The calcium silicates contributes most to the strength of concrete. Tricalcium silicates are responsible for must of the early strength.

Explanations:

When water is added to cement, the chemical reaction take place called hydration and contributes to the final concrete product. The calcium silicates contributes most to the strength of concrete. Tricalcium silicates are responsible for must of the early strength.