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Retarders are used to ___________

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Retarders are used to ___________

(a) Offset the accelerating effect of cold weather on the setting of concrete

(b) Offset the accelerating effect of hot weather on the setting of concrete

(c) Offset the Retarding effect of cold weather on the setting of concrete

(d) Offset the Retarding effect of hot weather on the setting of concrete

I have been asked this question in homework.

My question is based upon Accelerators and Retarders in chapter Admixtures and Construction Chemicals of Concrete Technology

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The correct choice is (b) Offset the accelerating effect of hot weather on the setting of concrete

The best I can explain: Retarders are used to offset the accelerating effect of hot weather on the setting of concrete.

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