Difference between White Cement and Ordinary Portland Cement
White Portland cement is made from raw materials containing little or no iron or manganese, the substances that give conventional cement its gray color. So the secret of the White cement is raw material. Apart from that only whitest chalk is used together with light colored sand in production of white cement. White cement production needs usually 40% higher energy than the normal grey cement and this contributes to the high price of white cement.
The difference between ordinary cement and while cements are thus as follows:
- The amount of chromium, manganese, iron compounds is significantly less in white cement in comparison to gray cement
- Production of white cement consumes significantly more energy in comparison to gray cement
Kindly note that the setting behaviour and strength development of white cement is almost equivalent to grey cement. Further, Gypsum is used in the making of both white cement and ordinary grey cement.