The basic purpose of a retarder in concrete is________?
Ato improve the workability of concrete mix
Bto decrease the initial setting time of cement paste in concrete
Cto render the concrete more water tight
Dto increase the initial setting time of cement paste in concrete
Correct answer
D. to increase the initial setting time of cement paste in concrete
Explanation
The correct answer is to increase the initial setting time of cement paste in concrete.