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    Special Concrete

    IS 12089:1987

    Granulated Slag for Manufacture of Portland Slag Cement

    Edition: 1st EditionYear: 1987Pages: 10

    About this code

    Specification for granulated blast furnace slag — chemical, physical, and grading requirements for use in PSC and as a SCM.

    Key sections

    1. 01Scope
    2. 02Chemical composition
    3. 03Granulation
    4. 04Sampling

    Critical clauses

    Clause 5.0Composition

    CaO + MgO + SiO2 >= 2/3 mass.

    In practiceGlassy slag preferred.

    Practical implications

    For specifiers

    Specify GGBS % for durability.

    For suppliers

    Source from steel plants.

    For executors

    Extend curing.

    FAQs

    GGBS dosage in concrete?

    30-70% replacement; durability improves at 40%+.

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