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Retarders are used for:

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in Basic Civil Engineering by (111k points)
Retarders are used for:

(a) Construction of high rise building

(b) Repair works

(c) Cold weather conditions

(d) Grouting deep oil wells

I had been asked this question in an interview.

The query is from Composition of Concrete topic in section Building Construction of Basic Civil Engineering

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Best answer
The correct choice is (d) Grouting deep oil wells

Explanation: Retarders are used to slow down the initial rate of hydration and extend the initial setting time. It is therefore used to grout deep oil wells, transport RMC (Ready Made Concrete) and avoid cold joints. Accelerator is used for first 3 options.

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