About 2 to 5% of gypsum (caso_(4).2h_(2)o) is added to portland-Turito

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Chemistry-

General

Easy

Question

About 2 to 5% of gypsum $left parenthesis C a S O subscript 4.2 H subscript 2 O right parenthesis$ is added to Portland cement. It is just to

Increase the setting rate of the cement during hydration
Slow down the setting rate to increase strength
Both (a) and (b) are correct
None of the above is correct

The correct answer is: Slow down the setting rate to increase strength

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