For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is

Geologically, marble is known as

Manganese steels

Which of the following has more fire resisting characteristics?

Advantage of a clamp compared to a kiln for burning bricks is that

A heavy stone is suitable for

Plywood is normally available

The slenderness ratio for masonry walls should not be more than

Early attainment of strength in rapid hardening cement is mainly due to