Compressive strength of concrete is 28.9 N/mm2 after 56 days. Is this acceptable? - Quora

Why is 28 days compressive strength of cement concrete taken as the standard in the civil engineering construction industry? - Quora

What are the advantages and disadvantages of using low strength concrete for compression as opposed to high strength concrete in terms of compressive strength and cost? - Quora

What is characteristic compressive strength? - Quora

What is the difference between splitting crack and tensile crack in concrete? - Quora

What are the effects of using higher strength concrete in design? - Quora

Which one gives the desired compressive strength of concrete, aggregate or cement? Why? - Quora

In which direction does wood have its highest compressive strength? - Quora

What is the strength of M15 grade concrete after 28 days? - Quora

How is the strength of concrete specified? - Quora

What is the compressive strength of concrete? - Quora

What is the compressive strength of concrete? - Quora

Why is the old concrete so much more durable than the new concrete? - Quora

What is the standard used to determine concrete's strength in 7 days? - Quora

What is the effect of coarse aggregate size in compressive strength of concrete? - Quora