The heat of hydration of cement can be reduced by

Shrinkage in concrete can be reduced by

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

The gypsum is added to the cement for

Efflorescence in cement is caused due to the excess of

Strain in concrete at zero stress is called

Non-uniform compaction may cause the concrete

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