Impact of Fly Ash on Concrete production cost

In this paper we have analyzed the Ash deriving from the residue of burnt coal in Kosovo Power Plants, especially in Power Plant "Kosova B". Given the large amount of Ash deriving from the combustion of coal and which is left as residue (redundancy), it was considered as necessary to carry out a study about the impact of Fly Ash in the reduction of Concrete production cost, but always having in mind to preserve the quality of concrete. The study is undertaken in accordance with the requirements of European standards. European Standard SK EN 206-1, EN 450-1 and EN 450-2. The Fly Ash is used as a supplementary of cement material in the production of concrete from Portland cement. As such, it had the impact of reducing the amount of cement used for a significant percentage. In addition to having an impact in cost reduction, the use of Fly Ash will also have an impact on the preservation of environment in two ways: one, by removing the ash from the landfills, because due to winds the ash is spread into the environment; and, two, it will contribute to reducing CO2 emissions from the production of cement.