ABSTRACT
The last point indicates some risks relating to by-products. Planned use of industrial by-products is a relatively new phenomenon in building, but this is in the process of changing and is mainly a consideration of substances that can be used as constituents in cement and concrete products. Widespread use of by-products which have properties similar to pozzolana, for example, will drastically reduce energy consumption within the cement industry, as well as saving other raw material resources. By planning industrial areas so that different industries support each other with their by-products, it should be possible to reduce transport costs in time and energy.
