Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/4774
Título: Influence of the use of recycled concrete aggregates from different sources on structural concrete
Autor: Pedro, D.
Brito, Jorge Manuel Caliço Lopes de
Evangelista, Luís
Palavras-chave: Source Concrete
Recycled Aggregates
Mechanical Performance
Data: 30-Nov-2014
Editora: Elsevier Science LTD
Citação: PEDRO, D.; BRITO, Jorge Manuel Caliço Lopes de; EVANGELISTA, Luís Manuel Faria da Rocha – Influence of the use of recycled concrete aggregates from diferente sources on structural concrete. Construction and Building Materials. ISSN: 0950-0618. Vol. 71 (2014) p. 141-151.
Resumo: This paper intends to evaluate the capacity of producing concrete with a pre-established performance (in terms of mechanical strength) incorporating recycled concrete aggregates (RCA) from different sources. To this purpose, rejected products from the precasting industry and concrete produced in laboratory were used. The appraisal of the self-replication capacity was made for three strength ranges: 15-25 MPa, 35-45 MPa and 65-75 MPa. The mixes produced tried to replicate the strength of the source concrete (SC) of the RA. Only total, (100%) replacement of coarse natural aggregates (CNA) by coarse recycled concrete aggregates (CRCA) was tested. The results show that, both in mechanical and durability terms, there were no significant differences between aggregates from controlled sources and those from precast rejects for the highest levels of the target strength. Furthermore, the performance losses resulting from the RA's incorporation are substantially reduced when used medium or high strength SC's. (C) 2014 Elsevier Ltd. All rights reserved.
Peer review: yes
URI: http://hdl.handle.net/10400.21/4774
DOI: 10.1016/j.conbuildmat.2014.08.030
ISSN: 0950-0618
Aparece nas colecções:ISEL - Eng. Civil - Artigos

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