Sustainable structural lightweight concrete with recycled polyethylene terephthalate waste aggregate.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorResende, Douglas Mol-
Autor(es): dc.creatorCarvalho, José Maria Franco de-
Autor(es): dc.creatorPaiva, Bárbara Oliveira-
Autor(es): dc.creatorGonçalves, Gustavo dos Reis-
Autor(es): dc.creatorCosta, Laís Cristina Barbosa-
Autor(es): dc.creatorPeixoto, Ricardo André Fiorotti-
Data de aceite: dc.date.accessioned2025-08-21T15:13:31Z-
Data de disponibilização: dc.date.available2025-08-21T15:13:31Z-
Data de envio: dc.date.issued2024-11-17-
Data de envio: dc.date.issued2024-11-17-
Data de envio: dc.date.issued2023-
Fonte completa do material: dc.identifierhttps://www.repositorio.ufop.br/handle/123456789/19017-
Fonte completa do material: dc.identifierhttps://doi.org/10.3390/buildings14030609-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1006865-
Descrição: dc.descriptionPlastic is a widely consumed material with a high decomposition time, occupying sig nificant space in landfills and dumps. Thus, strategies to reuse plastic waste are imperative for environmental benefit. Plastic waste is a promising eco-friendly building material for cement-based composites due to its reduced specific gravity and thermal conductivity. However, this waste reduces the composites’ mechanical strength. This work aims to produce and evaluate lightweight concretes made with only lightweight aggregates and mostly recycled plastic aggregates. Initially, an optimized dosage approach for lightweight concrete is presented. The mixture proportion of the lightweight concrete was based on the performance of mortars with the complete replacement of natural aggregate by recycled polyethylene terephthalate (PET) aggregates. The PET aggregates showed irregular shapes, impairing workability and providing lightweight concretes with around 18% water absorption and 21% void index. However, the concretes presented significantly low-unit weight, approximately 1200 kg/m3 . This work presented a structural lightweight concrete (ACI 213-R) using only lightweight aggregates and mostly plastic waste aggregate, with a compressive strength of up to 17.6 MPa, a unit weight of 1282 kg/m3, and an efficiency factor of 12.3 MPa·cm3/g. The study shows that with an optimum dosage, reusing plastic waste in concrete is a viable alternative contributing to environmental sustainability.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsaberto-
Direitos: dc.rightsThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). Fonte: PDF do artigo.-
Palavras-chave: dc.subjectStructural lightweight concrete-
Palavras-chave: dc.subjectLightweight mortars-
Palavras-chave: dc.subjectPET aggregate-
Palavras-chave: dc.subjectRecycled plastic aggregate-
Palavras-chave: dc.subjectPlastic waste-
Título: dc.titleSustainable structural lightweight concrete with recycled polyethylene terephthalate waste aggregate.-
Aparece nas coleções:Repositório Institucional - UFOP

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