Thursday, July 2, 2020

WHITE CEMENT- MANUFACTURE, PROPERTIES AND USES

White Cement

White cement or White Portland cement is same as grey Portland Cement the only difference is in its colour and fineness.The colour of white cement is determined by its raw materials and the manufacturing process.Metal oxides,primarily iron and manganese,influence the whiteness and undertone of the materials.

India is the 5th largest producer of White Cement with appox 1 metric ton produced per year.


Manufacture of White Cement

The manufacture of white cement is same as that of grey cement.The raw materials such as limestone and clay are used as prominent materials along with least percentage of chromium,manganese,iron, copper. vanadium,nickel and titanium.The manufacture process are same as that of Ordinary Portland
Cement.White cement is produced at temperature over and around 1450-1500℃.This temperature is more when compared with ordinary grey cement that is why heat required for burning is more and fineness is more.

Properties of White Cement


              PROPERTIES                      VALUE         
Fineness  395 m2/kg
Setting Time 100 min


COMPRESSIVE STRENGTH

1Day 21 MPa
 2 Day 38 MPa
 7 Day
 61 MPa 
 28 Day74 MPa
 Compact Density 3150 kg/m3
 Bulk Density 1100 kg/m3
 Brightness 87 %


Uses of White Cement

  • It is used for decorative works.
  • It is used in architectural decorative designs.
  • It is used in flooring.
  • It is used in Tile grouting.
  • It is used in making sculptures.
  • It is used as sealants.

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