Portland Pozzolana Cement

Portland pozzolana cement is a blended cement in which OPC clinker is intergrinded with gypsum and pozzolanic material in cert ain proposition. It is also produced by grinding them separately and rigorously blending them in certain proportions. Compostion of Portland Pozzolana Cement The main chemical components of Portland cement are calcium, silica, alumina and iron. It is obtained from limestone, marl or chalk, while silica, alumina and iron come from the sands, clays and iron ore sources. Why Pozzolanic material is used in Cement? It helps to increase the strength of concrete and therefore consumption of PPC in the making of concrete is lesser than OPC and so it is more cost effective. Types of pozzolanamaterials : 1. Artificial pozzolana Fly ash, silica fume, rice husk, blast furnace slag. 2. Natural pozzolana Burnt clay, pumicite, diatomaceous Earth. Usages of Portland Pozzolana Cement Used in hydraulic structures, marine structures, const