Cement Cement is mixture of calcareous , silicious, argellacious and other substances. Cement is used as binding material in mortar , concrete etc.. MORTAR Mortar is a workable paste used to bind building blocks such as stones, bricks, and concrete masonry units together, fill and seal the irregular gaps between them, and sometimes add decorative colors or patterns in masonry walls. TYPES OF CEMENT: OPC WHITE CEMENT MASANORY CEMENT OIL WELL CEMENT HIGH ALUMINA CEMENT PORTLAND POZZOLANA CEMENT(PPC)