cement industry

Why Gypsum is Added to Cement?

October 31, 2015

Portland cement is hydraulic cement. This means that it sets and hardens faster due to a chemical reaction with water. As a result, it will also harden under water. Whenever water is mixed with cement, a smooth paste is formed that remains plastic for a short time....

Cement Making Process

October 31, 2015

The raw materials used for the manufacture of Portland cement are limestone CaCO3 and clay which are finely powdered and then mixed in the ratio 3 : 1 by mass. The mixture is again ground to a fine powder and water is added. The finely ground powder called slurry is...