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As per IS 456 2000 Clause 16, table 11, page no. 30, it is
written that acceptance strength of concrete is fck+4 for
grade above M20. what is the meaning of " Mean of the group
of 4 Non- overlapping consecutive test results"
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Answer Posted / sita rama raju
Average of 4 consecutive and different test samples (1 sample = 3 cubes).
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