Recycling Waste in Cement Based Materials: a Studying Method

Title: Recycling Waste in Cement Based Materials: a Studying Method
Author(s): Cyr
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: 306 - 315
Total Pages: 10
Nb references: 33
Language: English

Abstract: This paper presents a studying method for the recycling of waste as secondary raw
materials in cement-based materials used in civil engineering applications. The approach
includes two parts carried out simultaneously:
(i) a technological part, the aim of which is the evaluation of the effect of wastes on the
chemical, physical and mechanical properties of fresh and hardened concrete;
(ii) an environmental part, mainly based on leaching tests, in order to evaluate the
environmental impact of wastes used in concrete materials.
When considering the results obtained, associated with past experience and current
standards and regulations, two options are possible: either a setting in a controlled landfill,
generally following a solidification and stabilisation treatment, or a reuse in building or road
works (concrete, road foundations, embankments). This reuse is sometimes preceded by a
physical or a chemical treatment, so as to improve the properties of the final product
containing the waste material.
The method is illustrated with various cases mainly involving by-products from
incineration processes i.e. fly ash and bottom ash from municipal solid waste incineration,
sewage sludge ash, meat and bone meal ash, bagasse ash (incineration of sugarcane residues).
Other by-products, such as titanium fume, river and harbour polluted sediments and spent
catalysts from the petroleum industry are also studied.

Online publication: 2004-09-29
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143756.035

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