Concrete is the most common used material for construction &their design consumes almost the total cement production in
the world. The use of large quantities of cement produces increasing CO2 emission and as a consequence the greenhouse effect. A
method to reduce the cement content in the concrete mixes is the use of GGBS, Metakaolin Nano-Silica. This project aims to present
the state of GGBS, Metakaolin& Nano-Silica's effect on the workability and mechanical properties of concrete and to find out the
economy of the experiment as compared to convential concrete. Concrete has occupied an important place in construction industry in
the past few decades and it is used widely in all types of constructions ranging from small buildings to large infrastructural dams or
reservoirs..
