Comparison of M25 and M30 Grade Concrete by Partial Replacement of Cement with Metakaolin

Abstract

Now a days the partially replacement of Ordinary Portland cement with pozzolana has been increasing widely. Most commonly used pozzolana are fly ash, silica fume, metakaolin, and ground granulated blast furnace slag. A pozzolana is a material which, when combined with calcium, exhibits cementitious properties. Pozzolana are commonly used as an addition to cement concrete mixture to increase the long-term strength and other material properties of cement concrete and in some cases to reduce the material cost of concrete. Recent researched aimed at energy conservation in the cement and concrete-industry has in part, focused on the use of less energy intensive materials such as fly ash, slag and silica fume. Of the some attention has been given to the use of natural pozzolana like Metakaolin as possible partial replacement for cement. Amongst the various methods used to improve the strength, Durability and resisting power of the temperature, and to achieve high performance of the concrete, the use of Metakaolin a relatively new approach, the chief problem with its extreme fineness and high water requirement when mixed with cement.