Light-weight concrete is prepared by

The cement concrete in which high compressive stressed are artificially induced before its actual use, is called

To perform the initial setting time test, the water is added to the cement at the rate of .... by weight of cement

For preparing ordinary concrete, the quantity of water used, is

Early setting of cement can be attained by the addition of

The cement becomes useless if it absorbed moisture more than

Durability of cement concrete generally improves by

The mixer, which produces a steady stream of concrete as long as it is in operation, is known as