The frog of a brick is normally made on its

According to Indian standard specifications, the concrete should be cured under a humidity of

The initial setting time of rapid hardening cement should not be less than

The thin radial fibres extending from the pith to the cambium layer is called medullary rays.

The process of mixing clay, water and other ingredients to make bricks, is known as

The bitumen paints are used for providing

The vehicle used in bronze paints is usually

The percentage of the slag component of Portland-slag cement varies from

Distemper is used on