Light-weight concrete is prepared by

For constant w/c ratio if the aggregate/cement ratio is reduced, the workability of concrete

For reinforced concrete, the aggregate used is

Segregation in concrete results in

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

The most useless aggregate is, whose surface texture is

A concrete having a slump of 6.5, is said to be

The percentage of water for making a cement paste of normal consistency varies from