For concrete exposed to a very aggressive environment the w/c should be lower than _____

It ______ the quantity and _______ cost of sampling and testing.

HPC is not used in high span bridges.

Gel/Space ratio = x = Volume of gel / Space available = 0.657 C / 0.319 C+ Wo. Here Wo stands for?

Maturity methods provide a _______ simple approach for strength of concrete.

Maximum size of aggregates are used to produce 70MPa compressive strength is ____

It is a ______ method.

____________ mm nominal maximum size aggregates gives optimum strength.