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    Testing Standards

    IS 13311 (Part 2):1992

    Non-Destructive Testing - Rebound Hammer

    Edition: 1st EditionYear: 1992Pages: 12

    About this code

    Procedure for rebound hammer (Schmidt hammer) testing — calibration, surface preparation, reading, and strength estimation.

    Key sections

    1. 01Apparatus
    2. 02Calibration
    3. 03Measurement
    4. 04Interpretation

    Critical clauses

    Clause 6.0Reading

    Average 12 readings, exclude outliers.

    In practiceAlways combine with UPV and core for diagnosis.

    Practical implications

    For specifiers

    Diagnostic NDT only.

    For suppliers

    Common QC tool.

    For executors

    Quick check, not acceptance.

    FAQs

    Is rebound number = strength?

    No — needs hammer-specific calibration curve.

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