Waste Materials Used For Building Construction

摘要

The fly ash is an industrial waste which produces environment problems because contaminates lands and water with heavy metals. The ultra fine fly ash is captured with cyclones help. There were made experimental researches on mixtures realized with ultra fine fly ash (from Timisoara Power Plant-Romania), classical mineral binder (lime and cement), sand, water and super plasticizer. The testes made were concerning to: apparent density, bending tensile and compression strengths and thermal conductivity. The new building materials have the same properties like ordinary concretes, mortars, bricks etc. The technical efficiency, thermal efficiency, economic efficiency and sustainability index were established for new materials, classical building materials and Reference Materials. It was obtained building materials with over 25% economy versus materials with superior characteristics. By using an industrial waste (ultra fine fly ash) will result a good impact on environment. The materials with industrial waste (ultra fine fly ash) are recommended to be used as prefabricated slabs for pavement.