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    Special Concrete

    IS 7861 (Part 2):1981

    Cold Weather Concreting - Recommended Practice

    Edition: 1st EditionYear: 1981Pages: 16

    About this code

    Recommendations for concreting below 5°C — protection from freezing, accelerated curing, insulated formwork. Limited application in Bangalore.

    Key sections

    1. 01Effects of cold
    2. 02Materials
    3. 03Protection
    4. 04Curing

    Critical clauses

    Clause 4.0Threshold

    Special precautions when ambient < 5°C.

    In practiceBangalore rarely needs this.

    Clause 6.0Protection

    Insulated formwork, heating, accelerators.

    In practiceCalcium chloride banned in RCC.

    Practical implications

    For specifiers

    Reference for hill stations.

    For suppliers

    Stock non-chloride accelerators.

    For executors

    Cover overnight in winter.

    FAQs

    Relevant for Bangalore?

    Rarely — only December/January nights in some years.

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