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Civil - Construction Materials: Lime, Cement, Aggregates, Mortar

White and Coloured Portland Cement (IS: 8042)

   Posted On :  15.07.2016 02:05 pm

It is manufactured from pure white chalk and clay free from iron oxide. Greyish colour of cement is due to iron oxide.

White and Coloured Portland Cement (IS: 8042)

White and Coloured Portland Cement (IS: 8042): It is manufactured from pure white chalk and clay free from iron oxide. Greyish colour of cement is due to iron oxide. So, the iron oxide is reduced and limited below 1 per cent. Coloured cements are made by adding 5 to 10 per cent colouring pigments before grinding. These cements have same properties as that of ordinary Portland cement and are non-staining because of low amount of soluble alkalis. Sodium alumino fluoride is added during burning which acts as a catalyst in place of iron.

 

Properties: Loss on ignition of white cement is nil. The compressive and transverse strength of this cement is 90 per cent of that of 33 grade ordinary Portland cement.

 

Uses: These cements are used for making terrazzo flooring, face plaster of walls (stucco), ornamental works, and casting stones.

 

Tags : Civil - Construction Materials: Lime, Cement, Aggregates, Mortar
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