Assessment of the building stock as an alternative supply for raw materials in engineered construction
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Published:2001
B Pitzini-Duée, O Rentz, 2001. "Assessment of the building stock as an alternative supply for raw materials in engineered construction", The exploitation of natural resources and the consequences: The proceedings of GREEN 3: the 3rd International Symposium on Geotechnics Related to the European Environment held in Berlin, Germany, June 2000, R. W. Sarsby, T. Meggyes
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Due to the ageing of the building stock and the evolution of requirements according to the functions and the qualities of buildings, the built environment is increasingly involved in large renovation, conversion and demolition measures. The amount of inert waste generated by these works represents 33 million tonnes per year in Germany and 16 million tonnes per year in France. In spite of the heterogeneity of the demolition waste and its possible pollutant content, strategies can be applied for the recovery of building materials with improved quality. In this paper the recycling rate, the quality of the recycling materials and their areas of re-use are assessed with regard to the building characteristics as well as to the deconstruction and reprocessing techniques employed. Special attention is given to economic aspects. In conclusion, an overview of the competitive conditions between newly-quarried aggregates and recycled demolition waste is set out
1 INTRODUCTION
2 RECOVERY OF BUILDING MATERIALS
3 COMPETITIVE CONDITIONS BETWEEN PRIMARY AND DEMOLITION AGGREGATES
4 CONCLUSIONS
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