Physical–chemical and mineralogical characterization of fine aggregates from construction and demolition waste recycling plants
By F. Rodrigues, M. Teresa Carvalho, L. Evangelista, Jorge de Brito. 2013
215 citations recorded by the source corpus.
Construction and demolition waste (CDW) represents around 31% of all waste produced in the European Union. It is today acknowledged that the consumption of raw materials in the construction industry is a non-sustainable activity. It is thus necessary to reduce this consumption, and the volume of CDW dumped, by using this waste as a source of raw materials for the production of recycled aggregates. One potential use of these aggregates is their incorporation in reinforced concrete as a replacement of natural aggregates. A concrete that incorporates these aggregates and still performs well requires them to be fully characterized so that their behaviour within the concrete can be predicted. Coarse recycled aggregates have been studied quite thoroughly, because they are simpler to reintroduce in the market as a by-product, and so has the performance of concrete made with them. This paper describes the main results of research designed to characterize the physical and chemical properties of fine recycled aggregates for concrete production and their relationship with mineralogical composition and pre-processing. The constraints of the incorporation of fine aggregates in reinforced concrete are discussed. It is shown that, unless a developed processing diagram is used, this application is not feasible.
Subfields: Building and Construction, Industrial and Manufacturing Engineering
View Paper: https://www.semanticscholar.org/paper/9d1fddc46b8ecbd2f810baefbb7ffcbdc17a938c
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In Building and Construction
- Jorge de Brito
- L. Evangelista
- J. R. Jiménez
- Miguel Bravo
- F. Cartuxo
- E. F. Ledesma
- J. Pontes
- R. Silva
In Industrial and Manufacturing Engineering
Citations in the corpus
- Rheological behaviour of concrete made with fine recycled concrete aggregates – Influence of the superplasticizer (2015, background): “This fraction shows worse physico-mechanical and chemical properties, such as greater amount of cement paste, porosity, water absorption and acid soluble sulphate content, which may limit its use in concrete [21].”
- Physical, chemical and mineralogical properties of fine recycled aggregates made from concrete waste (2015, unknown): “A route to improve FRA characteristics is to submit them to comminution processes similar to those applied to FNA [40,41].”
- Durability performance of concrete with recycled aggregates from construction and demolition waste plants (2015, background): “[31] made a chemical analysis of eight types of RA from CDW recycling plants and reached the same conclusion.”
- Concrete with fine recycled aggregates: a review (2014, background): “Rodrigues et al. (2013) performed a survey of the processing flowcharts of the various Portuguese recycling plants and concluded that in most of them the RA produced are subjected only to primary crushing, with very few using secondary crushing.”