news from the BRE Group
published: 7/5/2002
This press release is over six months old and the details may have been superseded. Please contact the Press Office for the latest information.
Using non-ferrous industry waste as aggregate
A new BRE partnership project will demonstrate the use of non-ferrous industry wastes as aggregate in construction, and encourage their use in areas local to the manufacturing sites producing them. This will reduce the need for landfill space and be of economic help to local manufacturing industries.
The economic and environmental costs of sending non-ferrous industry wastes to landfill are high. But their volumes are small when compared with aggregates consumed annually by the UK construction industry, and can easily be consumed in the locality of production without affecting any local economy reliant on producing primary aggregates.The project will firstly develop the mix designs of cementitious and bituminous systems containing ferro-silicate slag from the Imperial Smelting Furnace production of zinc (ISF slag), and the carbon and refractory portions of pot linings associated with aluminium production (spent pot linings - SPL). It then aims to prove the performance of the new ISF slag mixes by using them in the construction of trial sections of road.
Interested parties across the waste management, construction and environmental industries are being invited to join the project’s consultative group. For further information, E-mail harveyt@bre.co.uk
Notes
The project partnership includes:
- Alcan Smelting and Power UK Ltd
- Anglesey Aluminium Metal Ltd
- Aluminium Federation Ltd
- BRE
- Britannia Zinc Ltd
- Britannia Refined Metals Ltd
- Engineering Industry Directorate, DTI
- Environment Agency
- Hanson Premix
- Heckett Multiserv
- Highways Agency
- The Non-Ferrous Alliance
- Ready Mixed Concrete Bureau
- Rowan House Ltd
- Scott Wilson Pavement Engineering Ltd
- Tarmac Group
A recent feasibility study by BRE, co-ordinated by the Non-Ferrous Alliance and supported by the Engineering Industries Directorate of the DTI, highlighted the potential use for waste streams from non-ferrous metals production as aggregates bound in cement or bitumen (BRE Report 423, available from www.BREbookshop.com). Additionally, previous laboratory studies at BRE showed that it is technically feasible to use ISF slag in concrete construction.
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