1. Retarders are used for:
Correct Answer is : Grouting deep oil wells
2. _________ is added to make white concrete.
Correct Answer is : Metakaolin
3. As water cement ratio increases, ________ also increases.
Correct Answer is : Workability
4. Which of the below is an example of plasticizer?
Correct Answer is : Hydroxylated carboxylic acid
5. Which component of concrete gives it desired compressive strength?
Correct Answer is : Aggregates