Star Portland Pozzolana Cement (PPC) is a blended cement created by combining Ordinary Portland Cement (OPC) clinker with gypsum and pozzolanic materials. This process can be achieved through either a single-step inter-grinding of all components or by separately grinding and then thoroughly blending them.

Pozzolana is a siliceous or alumino-siliceous material that doesn't possess cement-like properties on its own. However, when finely ground and mixed with water, it reacts with calcium hydroxide to form compounds with cementing properties. This reaction occurs at normal temperatures.