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Q: Which of the following statements is true?
  • A. Addition of pozzolana to cement decreases workability
  • B. Addition of pozzolana to cement increases strength
  • C. Addition of pozzolana to cement increases heat of hydration
  • D. None of these
Correct Answer: Option D - Addition of pozzolana to cement increase its workability, pozzolana, also known as pozzolanic ash, is a fine, sandy volcanic ash. Pozzolana to cement decrease the heat of hydration. The pozzolanic cement is cheap then the ordinary cement. Pozzolana in cement does not increase the strength.
D. Addition of pozzolana to cement increase its workability, pozzolana, also known as pozzolanic ash, is a fine, sandy volcanic ash. Pozzolana to cement decrease the heat of hydration. The pozzolanic cement is cheap then the ordinary cement. Pozzolana in cement does not increase the strength.

Explanations:

Addition of pozzolana to cement increase its workability, pozzolana, also known as pozzolanic ash, is a fine, sandy volcanic ash. Pozzolana to cement decrease the heat of hydration. The pozzolanic cement is cheap then the ordinary cement. Pozzolana in cement does not increase the strength.