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Título
Recycling Aggregates for Self-Compacting Concrete Production: A Feasible Option
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Materials
Número de la revista
4
Cita Bibliográfica
Morán Del Pozo, J. M.; Guerra Romero, M. I.; Juan Valdés, A.; Martínez García, R.; Brito, J. D. (2020). Recycling Aggregates for Self-Compacting Concrete Production: A Feasible Option. Materials, 13(4), https://doi.org/10.3390/MA13040868
Editorial
MDPI
Fecha
2020
Resumen
[EN] The use of construction and demolition wastes (C&DW) is a trending future option for
the sustainability of construction. In this context, a number of works deal with the use of recycled
concrete aggregates to produce concrete for structural and non-structural purposes. Nowadays, an
important number of C&DW management plants in the European Union (EU) and other countries
have developed robust protocols to obtain high-quality coarse recycled aggregates that comply with
different European standards in order to be used to produce new concrete. The development of
self-compacting concrete (SCC) is another way to boost the sustainability of construction, due to the
important reduction of energy employed. Using recycled aggregates is a relatively recent scientific
area, however, studies on this material in the manufacture of self-compacting concrete have proven
the feasibility thereof for conventional structural elements as well as high-performance and complex
structural elements, densely reinforced structures, difficult-to-access formwork and difficult-to-vibrate
elements. This paper presents an original study on the use of coarse recycled concrete aggregate
(CRA) to obtain self-compacting concrete. Concrete with substitution ratios of 20%, 50% and 100%
are compared with a control concrete. The purpose of this comparison is to check the influence of
CRA on fresh SCC as well as its physical and mechanical properties. The parameters studied are
material characterization, self-compactability, compressive strength, and tensile and flexural strength
of the resulting concrete. The results conclude that it is feasible to use CRA for SCC production with
minimal losses in the characteristics.
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