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Hardened concrete testing - Non destructive

Testing of concrete in-situ is covered by various parts of BS EN 12504, Testing concrete in structures, including:

Part 1, Cored specimens – Taking, examining and testing in compression
Part 2, Non-destructive testing – Determination of rebound number
Part 3, Determination of pull-out force
Part 4, Determination of ultrasonic pulse velocity

However, various parts of BS 1881, Testing concrete, remain current including:

Part 201, Guide to the use of non-destructive methods of test for hardened concrete
Part 204, Recommendations on the use of electromagnetic covermeters
Part 207, Recommendations for the assessment of concrete strength by near-to-surface tests
Part 208, Recommendations for the determination of the initial surface absorption of concrete

Acknowledgement: The Concrete Society