1.

Proper amount of entrained air in concrete results in__________?_x005F_x000D_1. better workability_x005F_x000D_2. better resistance to freezing and thawing_x005F_x000D_3. lesser workability_x005F_x000D_4. less resistance to freezing and thawing The correct answer is:

A. (1) and (2)
B. (1)and(4)
C. (2)and (3)
D. (3)and (4)
Answer» B. (1)and(4)


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