Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/4780
Título: Performance of concrete made with aggregates recycled from precasting industry waste: influence of the crushing process
Autor: Pedro, D.
Brito, Jorge Manuel Caliço Lopes de
Evangelista, Luís Manuel Faria da Rocha
Palavras-chave: Concrete
Crushing Process
Mechanical and Durability Performance
Recycled Aggregates
Source Concrete
Data: 9-Nov-2014
Editora: Springer
Citação: PEDRO, D.; BRITO, Jorge Manuel Caliço Lopes de; EVANGELISTA, Luís Manuel Faria da Rocha – Performance of concrete made with aggregates recycled from precasting industry waste: influence of the crushing process. Materials and Structures. ISSN: 1359-5997. (2014).
Resumo: The aim of this paper is to evaluate the influence of the crushing process used to obtain recycled concrete aggregates on the performance of concrete made with those aggregates. Two crushing methods were considered: primary crushing, using a jaw crusher, and primary plus secondary crushing (PSC), using a jaw crusher followed by a hammer mill. Besides natural aggregates (NA), these two processes were also used to crush three types of concrete made in laboratory (L20, L45 e L65) and three more others from the precast industry (P20, P45 e P65). The coarse natural aggregates were totally replaced by coarse recycled concrete aggregates. The recycled aggregates concrete mixes were compared with reference concrete mixes made using only NA, and the following properties related to the mechanical and durability performance were tested: compressive strength; splitting tensile strength; modulus of elasticity; carbonation resistance; chloride penetration resistance; water absorption by capillarity; water absorption by immersion; and shrinkage. The results show that the PSC process leads to better performances, especially in the durability properties. © 2014 RILEM
Peer review: yes
URI: http://hdl.handle.net/10400.21/4780
DOI: 10.1617/s11527-014-0456-7
ISSN: 1359-5997
Aparece nas colecções:ISEL - Eng. Civil - Artigos

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