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

Is it possible to get 150% strength of concrete after 50 days of its casting? - Quora

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

Why does an increase in cement content result in a decrease in the compressive strength of concrete? - Quora

Why is the compressive strength determined from a 150x150 mm cylinder more than 150mm cubes? - Quora

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

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

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

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

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

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

If the target mean strength is not achieved for concrete, can we accept the 28-day results if it satisfies specified characteristic compressive strength at 28 days? - Quora