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Consider the following statements (P) and (Q): (P): Fly ash and ground granulated blast furnace slag can be used as mineral admixtures in concrete. (Q): As per IS 456:2000, the minimum moist curing period becomes higher when a mineral admixture is added to concrete. Identify the CORRECT option from choices given below.

1. Both (P) and (Q) are TRUE.
2. (P) is TRUE and (Q) is FALSE.
3. (P) is FALSE and (Q) is TRUE.
4. Both (P) and (Q) are FALSE.

Correct answer: Both (P) and (Q) are TRUE.

Solution

Both statements are accurate; fly ash and ground granulated blast furnace slag are indeed recognized as mineral admixtures that enhance concrete properties, and IS 456:2000 specifies that the curing period should be extended when such admixtures are used to ensure proper hydration and strength development.

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