Concrete is probably the most extensively used construction material in the world. The addition of Supplementary Cementitious Materials (SCMs) in concrete has dramatically increased along with the development of concrete industry, due to the consideration of cost saving, energy saving, environmental protection and conservation of resources. However, environmental concerns both in terms of damage caused by the extraction of raw material and carbon dioxide emission during cement manufacture have brought pressures to reduce cement consumption by the use of supplementary materials. Blending of a large amount of waste materials such as Fly Ash, Metakaolin, Rice Husk Ash, Ground Granulated Blast-furnace Slag, etc. is being done in large extents in the manufacture of High Performance Concrete (HPC). A lot of work has been done on replacement of cement with Fly Ash and Micro Silica, which have shown good results with respect to Strength and Durability. The existing blending methodology of binary blending (mixing one Supplementary Cementitious Material (SCM) with cement) and ternary blending (mixing two SCMs with cement) has improved the performance of concrete.
