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What role does sand play in a concrete mixture?
28. What role does sand play in a concrete mixture?
- It acts as a lubricant
- It enhances the hydration process
- It fills the voids between aggregates
- It reduces the cost of concrete
Answer
The correct answer is: C) It fills the voids between aggregates
Explanation
Sand fills the spaces between coarse aggregates, ensuring a dense and compact concrete mix, and helping in achieving a smooth finish.