The minimum compressive strength on 15 cm cubes of M 30 grade concrete at 7 days, should be a minimum of-A-7 N/mm2B-10 N/mm2C-20 N/mm2D-30 N/mm2-C-20 N/mm2

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APTITUDE CRACK · Accepted Answer

C 20 N/mm2 3 day strength at list 1/2 of 28 day strength and 2/3 of 28 day strength for 7 days. So, 2/3 * 20 * 2/3 * 40 = 1/2.

Structural Design Specifications - Engineering

The minimum compressive strength on 15 cm cubes of M 30 grade concrete at 7 days, should be a minimum of

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Structural Design Specifications - Engineering

The minimum compressive strength on 15 cm cubes of M 30 grade concrete at 7 days, should be a minimum of

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