Temperature control concrete IS 7861

Concreting in hot weather the temp of concrete in special structures is reduced to 25OC by mixing ice, to reduce chances of creacks. And some times in winters hot water is mixed to raise temp of concrete. Cold Weather Concreting : At the time of placing, it has a temperature of not less than 5oC and
that the temperature of the concrete shall be maintained above 4oC until it has thoroughly hardened. Stock-piled aggregate may be heated by the use of dry heat or steam.In general, the temperature of aggregates or water shall not exceed 65oC. Hot Weather Concreting: When depositing concrete in hot weather, precautions shall be taken so that the temperature of wet concrete does not exceed 40oC while placing.

Concrete should not be done in temp below 4OC and not more than 40OC of atmosphere.

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