It has long been known that certain industrial waste can be used as a raw material or additive in the production of cement. European standards define waste materials that can be used as additives in the production of cement, which are, in particular, fly ash from thermal power plants, granulated blast furnace slag, silica fume, etc. In Bosnia and Herzegovina, there are certain energy and industrial plants that produce such waste materials, which are mostly deposited on open landfills. Such disposal of waste results in contamination of water, soil, and air. Therefore, the aim of this paper was to conduct a preliminary examination of the possibilities of increasing use of industrial materials (fly ash from TPP Kakanj and granulated blast furnace slag of ironworks ArcelorMittal Zenica). The basic parameter that is followed in the work is the heat hydration of cement with different percentages of the addition of industrial waste materials.
