The alkaline salt present in the bricks, absorbs moisture from the air which on drying

The bitumen paints are used for providing

The timber whose thickness is less than 5 cm and the width exceeds 12 cm, is called a

The addition of pozzolana to Portland cement causes

The most powerful explosive used in blasting is

The shrinkage of ordinary concrete is about

Laterite is chemically classified as

The maximum water-cement ratio for durable concrete is

The vehicle used in bronze paints is usually