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Successful utilisation of steel slags in Germany
Armourstones are coarse aggregates used for protection and regulation purposes in hydraulic engineering to guarantee the stability of structures both in rivers and water-ways but also in coastal and offshore areas. The paper shows that steel slag armourstones meet the requirements given by the 'Technical Terms of Delivery for Armourstones' introduced by the German Federal Ministry of Transport, regarding technical and environmental demands. Because of their high specific density - higher than of most natural rock aggregates - steel slag armourstones have a better positional stability. So the authorities for hydraulic structures in Germany and in the Netherlands often give preference to steel slag armourstones. The main technical characteristics and environmental aspects of steel slag usage for armourstones are discussed, the quality control praxis is described. During the past 25 years about 1 million t of steel slags from German steel works have been used in hydraulic structures - not only in Germany but also in the Netherlands, e.g in the Delta Project, the biggest project in hydraulic engineering in the past decade. These 10 million t correspond to e.g a cube of 170 m or twice the volume of the biggest Egyptian pyramid, the pyramid of pharaoh Cheops, and if this amount of steel slag had not been used in hydraulic structures it would have been necessary to quarry and use natural rock aggregates. (VDEh)
Successful utilisation of steel slags in Germany
Armourstones are coarse aggregates used for protection and regulation purposes in hydraulic engineering to guarantee the stability of structures both in rivers and water-ways but also in coastal and offshore areas. The paper shows that steel slag armourstones meet the requirements given by the 'Technical Terms of Delivery for Armourstones' introduced by the German Federal Ministry of Transport, regarding technical and environmental demands. Because of their high specific density - higher than of most natural rock aggregates - steel slag armourstones have a better positional stability. So the authorities for hydraulic structures in Germany and in the Netherlands often give preference to steel slag armourstones. The main technical characteristics and environmental aspects of steel slag usage for armourstones are discussed, the quality control praxis is described. During the past 25 years about 1 million t of steel slags from German steel works have been used in hydraulic structures - not only in Germany but also in the Netherlands, e.g in the Delta Project, the biggest project in hydraulic engineering in the past decade. These 10 million t correspond to e.g a cube of 170 m or twice the volume of the biggest Egyptian pyramid, the pyramid of pharaoh Cheops, and if this amount of steel slag had not been used in hydraulic structures it would have been necessary to quarry and use natural rock aggregates. (VDEh)
Successful utilisation of steel slags in Germany
Erfolgreiche Verwendung von Stahlwerksschlacken in Deutschland
Merkel, T. (author)
2001
13 Seiten, 9 Bilder, 4 Tabellen, 15 Quellen
Conference paper
English
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