Portland cement is obtained by heating limestone and clay or other silicate mixtures at high temperatures (>1500°c) in a rotating kiln. The resulting clinker, when cooled, is mixed with gypsum (calcium sulfate) and ground to a highly uniform fine powder.
How Is Portland Cement Made?
Cement is often confused with concrete. Cement is a finely ground, usually gray powder that is used to produce concrete, mortar, and grout.
Concrete is produced by mixing cement with sand, water, and aggregate. Mortar is produced by mixing cement with sand. Grout is produced by mixing cement with water.
Portland cement is the most common type of cement in the world. It is used to make concrete, mortar, and grout. Portland cement is made by mixing calcined limestone and clay.
The limestone and clay are ground and mixed with water. The mixture is then heated in a kiln to produce clinker. The clinker is ground to a fine powder and mixed with gypsum.
The chemical formula for Portland cement is Ca3SiO5. The most common way to manufacture Portland cement is through a dry process. The limestone and clay are ground and mixed with water.
The mixture is then fed into a rotary kiln. The kiln is rotated at a high temperature, around 1450°C. The clinker is then ground to a fine powder and mixed with gypsum.
Portland cement is a hydraulic cement, which means it sets and hardens when it comes into contact with