Quality Improvement of Granular Wastes by Separation Techniques

Title: Quality Improvement of Granular Wastes by Separation Techniques
Author(s): Hendriks
Paper category : conference
Book title: International RILEM Conference on the Use of Recycled Materials in Building and Structures
Editor(s): E. Vázquez, Ch. F. Hendriks and G.M.T. Janssen
Print-ISBN: 2-912143-52-7
e-ISBN: 2912143756
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 142 - 149
Total Pages: 8
Nb references: 9
Language: English

Abstract: Heavy metals, organics and other compounds usually contaminate granular wastes. They
have an environmental impact. On the other hand, some components in granular wastes have
similar physical and chemical properties as primary raw building materials. Therefore they
have potentially good perspectives for utilization in civil engineering works as secondary raw
building materials. Required by the Dutch Building Materials Decree (BSB), to protect
groundwater and soil, the leaching values of inorganic components and composition of
organics must be under certain limits to reuse them as secondary building materials. From
technical aspects, some wastes fail with respect to the physical and mechanical properties for
a specific application because of unwanted components that may negatively affect the reuse or
limit the application functions. From both environmental and technical aspects, it is necessary
to improve the quality of granular wastes by separating undesired components. For this
purpose, separation techniques are suitable to treat such materials. The selection of techniques
is therefore an important step. Based on analysis of contaminants and discussion of
techniques, this paper gives the rules for technique selection and quality improvement

Online publication: 2004-09-29
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143756.016