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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/56889
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dc.creatorGilberto Alves da Silva Netopt_BR
dc.creatorJoão P. V. de Oliveirapt_BR
dc.creatorPedro Valle Sallespt_BR
dc.creatorRaphael de Vasconcelos Barrospt_BR
dc.creatorMaria Teresa Paulino Aguilarpt_BR
dc.creatorWhite J. dos Santospt_BR
dc.date.accessioned2023-07-24T19:24:17Z-
dc.date.available2023-07-24T19:24:17Z-
dc.date.issued2021-
dc.citation.volume14pt_BR
dc.citation.issue1pt_BR
dc.citation.spage382pt_BR
dc.citation.epage399pt_BR
dc.identifier.doi10.2174/1874836802014010382pt_BR
dc.identifier.issn1874-8368pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/56889-
dc.description.resumoBackground: The depletion of raw material resources, the preservation of the environment, and the need to compensate economic imbalances drive research efforts regarding the application of Construction and Demolition Waste (CDW) in concretes. Objective: This paper aimed to assess the influence of the heterogeneity, typology, and presence of contaminants of CDW (collected in different seasons and locations) on the mechanical properties and durability of concretes. Methods: Characterization procedures were performed for the aggregates (visual quantification and physical properties of the constituents), and for the concretes (compressive strength, splitting tensile strength test, modulus of elasticity, water absorption, porosity, electrical resistivity, carbonation depth, and digital microscopy). The replacement rate of natural aggregate for CDWA was of 20% in three different particle sizes: sand, gravel 0, and gravel 1. Results: The characteristics of the samples of CDW were very variable, influenced by the season and location of collection. The presence of materials with elevated porosity (ceramics, mortars) was observed in some samples and required increases in mixing water volume to keep the concretes’ consistency. A wide variation in mechanical properties caused by the CDWA constituents was also observed. Regarding the durability of the concretes, it was proven the greatest sensibility of this property to contaminants, thus requiring the removal of deleterious materials to using CDWA in structural concretes in order to avoid the formation of vesicles and guaranteeing their life span. Conclusion: The heterogeneity, typology and contaminant content significantly influence the analyzed properties. Besides, the segregation of waste at source makes the use of CDWA feasible in concretes.pt_BR
dc.languageporpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA MATERIAIS E DA CONSTRUÇÃO CIVILpt_BR
dc.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA SANITÁRIA E AMBIENTALpt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofThe Open Construction & Building Technology Journalpt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectConstruction and demolition wastept_BR
dc.subjectRecycled aggregatespt_BR
dc.subjectStructural concretept_BR
dc.subjectMechanical propertiespt_BR
dc.subjectDurabilitypt_BR
dc.subjectWaste variabilitypt_BR
dc.subject.otherPropriedades mecânicaspt_BR
dc.subject.otherDurabilidadept_BR
dc.titleInfluence of heterogeneity, typology, and contaminants of recycled aggregates on the properties of concretept_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://openconstructionbuildingtechnologyjournal.com/VOLUME/14/PAGE/382/#aff1pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-8050-4556pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4444-6958pt_BR
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