Coloured Cement may be obtained by intimately mixing mineral pigments with ordinary cement. The amount of colouring material may vary from 5 to 10 per cent. If this percentage exceeds 10 per cent, the strength of cement is affected.
- The chromium oxide gives green colour.
- The cobalt imparts blue colour.
- The ton oxide in different proportions gives brown, red or yellow colour
- The manganese oxide is used to produce black brown coloured cement
The coloured cements are widely used for finishing of floors, external surfaces. artificial marble, window sill slabs, textured panel faces, stair treads, etc.