A badly mixed cement concrete results in

French polish is

The initial setting time for ordinary Portland cement as per IS specifications should not be less than

The most important constituent of an oil paint, is

Inner part of a timber log surrounding the pitch, is called

Kaolin is chemically classified as

Galvanising means covering iron with a thin coat of

Asbestos . . . . . . . .

The basic purpose of a retarder in concrete is