Q
The basic purpose of a retarder in concrete is_____________?
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A
A. To increase the initial setting time of cement paste in concrete
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B
B. To decrease the initial setting time of cement paste in concrete
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C
C. To render the concrete more water tight
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D
D. To improve the workability of concrete mix
Correct Answer:
A. A. To increase the initial setting time of cement paste in concrete
