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Q: A concrete using an air entrained cement
  • A. has strength less than 10% to 15%
  • B. has more resistance to weathering
  • C. is more plastic and workable
  • D. is free from segregation and bleeding
Correct Answer: Option C - Air entraining agents–Admixtures which incorporate millions of stable isolated air bubbles in concrete. Such concrete has been found to resist action of frost. They increases workability & plasticity of concrete. Note– Commission no option is correct.
C. Air entraining agents–Admixtures which incorporate millions of stable isolated air bubbles in concrete. Such concrete has been found to resist action of frost. They increases workability & plasticity of concrete. Note– Commission no option is correct.

Explanations:

Air entraining agents–Admixtures which incorporate millions of stable isolated air bubbles in concrete. Such concrete has been found to resist action of frost. They increases workability & plasticity of concrete. Note– Commission no option is correct.