Referring to the graph below, what is the approximate value of strength of 50mm cube in MPa for gel-space ratio .8?

Concrete having 28- days’ compressive strength in the range of 60 to 100 MPa.

What is the approximate quantity of water in M5?

It is _______ strength and _______ permeability.

Where the matrix is extremely dense, a weak aggregate may become the weak.

What is the percentage of steel fibre by weight in UHPC?

Concrete having 28-days compressive strength in the range of 100 to 150 MPa.

For high-strength concrete, a cement should produce a minimum 7-days mortar-cube strength of approximately ___ MPa.