Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as

The main constituent of fly-ash, is

Formula for quick lime, is

Bituminous fells are used for

Quick lime (or caustic lime)

Excess of silica in brick earth results in

Cast iron . . . . . . . .

The maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is

Bitumen may be dissolved in