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: 76 - 79
Total Pages: 4
State of the art regarding local recycling industry
The first construction and demolition waste recycling plant in Belgium started to operate already back in the fifties. However, the recycling industry was only developed on a broader scale from the seventies on, amongst others due to scientific and technical research. This lead in the beginning of the eighties to one of the most important pilot projects in Belgium.
Since then, recycling became more and more a 'hot' topic. Nowadays about 90 recycling plants are operating all over the country and can be classified into fixed plants, mobile installations with a fixed location and mobile installations. About 75% of all the installations belong to the two first categories. The most advanced installations are generally composed of the following elements: a weighing bridge, equipment's for pre-processing (bull, crane), a preliminary sieve to eliminate earth, sand and gypsum (finest materials), a primary crusher, electrical magnet systems, a sieve installation to separate the materials in accordance with the size of the obtained materials, an air sieve or a washing installation and a secondary crusher and sieve installation.
Far the largest part of the recycled aggregates is used in road construction. In addition to the re-use of crushed asphalt this sector takes the crushed concrete as mixed aggregates for use as unbound base-course and sub-base material. The mix material, and to a lesser degree the sieve and crusher sand, is also used in earthworks and raising. These materials are already for some years used as aggregates for treated or stabilised sand and lean concrete produced at mixing installations situated besides the recycling plant. Albeit the processing of masonry rubble is relatively cheap, the market for crushed masonry aggregates stays up till now limited. Therefore, recycling plants may refuse to accept masonry rubble, which leads to the inevitable low-grade, unprocessed application of this inert material.
Online publication: 2009-12-07
Publication type : full_text
Public price (Euros): 0.00