The 'accelerated curing test' on concrete is used when:
Choose the correct answer
28-day test results are not available and immediate strength prediction is needed for quality control
The concrete is expected to have low strength
Normal curing is the only method available
Admixtures are not used in the mix
Correct Answer
A. 28-day test results are not available and immediate strength prediction is needed for quality control
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Accelerated curing test (IS 9013): Used to predict 28-day strength early (within 24–48 hrs). Methods: warm water method (60°C, 23 hrs after moulding → test at 24 hrs); autogenous curing. Useful for: quality control checks at early age, pre-stressed work, cold weather concreting. Correlation established between accelerated strength and standard 28-day strength.
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