What is internal sulphates attack?

Strength of concrete increase with _____

Approximate ratio of the strength of the cement conc of 7 days to that of 28 days (2/3)?

Approximate ratio of strength of the 30 cm cube to that of 15 cm cube is _________

How many types of sulphates attack occur in concrete?

In order to avoid segregation, the concrete should not be thrown from a height.

Approximate ratio of direct tensile strength to flexural strength is ________

Reinforced cement concrete is equally strong in taking ______