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

An air- entraining agent when added to cement improves

The types of aggregates not suitable for high strength concrete and for pavements subjected to tension, is

The basic water depend on

The concrete mix which causes difficulty in obtaining a smooth finish, possess

The light weight aggregates are obtained from

The maximum particle size of coarse aggregate is

Workability of concrete mix with low water cement ratio is determined by