REPLACEMENT OF CEMENT WITH GGBS & FLY ASH

Abstract

The word concrete is defined as concrete that meets special combinations of strength and uniformity requirements that cannot always be achieved routinely using conventional constituents and normal mixing, placing, and curing practices. The concrete is widely used in large scale in the construction industry, not only for its strength and also with the demands of high strength, high performance and high durability at desirable cost. And also at the same time the demand for reducing the usage of cement quantity with partial replacement of other Pozzolanic materials to save the environment without any deviations in the concrete strength. It is very difficult to get a product which simultaneously fulfills all of the properties. For this in recent years the word “Blended cements” is introduced into the construction industry to partial replacement of cement with any other Pozzolanic materials to reduce the quantity of ordinary Portland cement, and also to reduce the cost of concrete.