Author(s): RILEM TC 165-SRM
Paper category : book
Book title: Sustainable Raw Materials - Construction and Demolition Waste - State-of-the-Art Report of RILEM TC 165-SRM
Editor(s): Ch. F. Hendriks and H. S. Pietersen
Publisher: RILEM Publications SARL
Publication year: 2000
Pages: 101 - 107
Total Pages: 7
Amount of waste materials and recycled products
The available statistic data are subject to considerable uncertainty. A reasonable projection is based on approximately 300 million tons per year of C&D waste and residues. This amount is composed of roughly two thirds of earth, soil and original rock material from excavation work and approximately one third of mineral material from road and highway construction, demolition waste and waste from construction sites, from the later three categories only about 85 million tons are considered suitable for recycling in a proper sense. According to estimates of various associations/statistics, between 32 and 45 million tons per year of these materials are in fact recycled (40-60%). Almost no material is held in stockpile but is either used for landfill or - without further treatment - used for dam building or recultivation.
On the other hand about 800 million tons per year of natural mineral materials (gravel, sand, natural stones etc) and slag or ashes are used in the construction industry, thus recycled materials can meet at best 10% of the overall demand. It is estimated that at present recycled materials cover only approximately 5 percent of the total materials demand. In addition to recycled materials produced from C&D waste, residues from other industrial activities are used in construction (see table 17).
Online publication: 2009-12-07
Publication type : full_text
Public price (Euros): 0.00