GATE2015-1-5

Question

Consider the following statements for air-entrained concrete:

1. Air-entrainment reduces the water demand for a given level of workability
2. Use of air-entrained  concrete is required in environments where cyclic freezing and thawing is expected

Which of the following is TRUE?

• A. Both (i) and (ii) are True
• B. Both (i) and (ii) are False
• C. (i) is True and (ii) is False
• D. (i) is False and (ii) is True