Sustainable use of building materials in earthworks - Use of iron and steel slag in earthworks with technical safety measures

• Increasing the use of industrial by-products and secondary raw materials in earthworks
• Conservation of natural resources of mineral substances
• Reduction of waste disposal to landfills

• Establishment of the basis for the required material processing of iron and steel slag (EHS) on the basis of experimental investigations

• Description of the geotechnical properties of EHS
• Indication of recommendations for the preparation of EHS to achieve low permeabilities
• Enhancement of knowledge about the leaching behaviour of EHS

Laboratory tests of different mixtures of EHS, filler and clay powder with regard to:

• the soil mechanical properties (load-bearing capacity, compactability, deformation behaviour)
• the hydraulic properties in saturated and unsaturated state
• the leachability
• weather resistance