It is a hydraulic cementing material made of Portland cement clinker, 0-5% limestone or granulated blast furnace slag, and an appropriate amount of gypsum. Type 1 Portland cement is called when no admixture is added. Type II Portland cement is called when no more than 5% limestone or granulated blast furnace slag admixture is added.
Inorganic non-metallic materials -> Cementitious materials and concrete