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Thermal performance of concrete with reactive magnesium oxide as an alternative binder

2022-05-12Journal article Open access
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dc.contributor.authorForero Valencia, Javier Andres
dc.contributor.authorBravo, Miguel
dc.contributor.authorPacheco, João
dc.contributor.authorBrito, Jorge de
dc.contributor.authorEvangelista, Luis
dc.date.accessioned2023-05-23T07:33:32Z
dc.date.available2023-05-23T07:33:32Z
dc.date.issued2022-05-12
dc.description.abstractThis study evaluates the thermal conductivity of concrete produced with reactive magnesium oxide (MgO) as a partial replacement for cement. MgO is a viable option for the concrete industry, mainly due to its benefits in sustainability and reducing CO2 emissions compared to cement emissions. Four different MgO's produced in Australia, Canada, and Spain were used in concrete mixes as a partial replacement of cement at 5%, 10%, and 20% by mass. The experimental results showed that the thermal conductivity is higher when MgO increases in mixes after 28 days of curing. With the incorporation of MgO, the thermal conductivity increased between 3.2% and 10.2%, and the mechanical properties declined: compressive strength between 12.7% to 26.2%, splitting tensile strength between 9.7% to 34.0%, and modulus of elasticity between -4.1% to 7.8%. Finally, it is important to highlight that the addition of different contents of MgO in the concrete mixes modified the microstructure of the cement matrix. As a result, there was an increase in porosity, which negatively influenced the mechanical properties and thermal conductivity. Therefore, the relationships between these properties were also analyzed.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFORERO, Javier A.; [et al] – Thermal performance of concrete with reactive magnesium oxide as an alternative binder. Sustainability. eISSN 2071-1050. Vol. 14, N.º 10 (2022), pp. 1-12.pt_PT
dc.identifier.doi10.3390/su14105885pt_PT
dc.identifier.eissn2071-1050
dc.identifier.urihttp://hdl.handle.net/10400.21/16103
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationPTDC/ECI-COM-31138/2017 - FCTpt_PT
dc.relation.publisherversionhttps://www.mdpi.com/2071-1050/14/10/5885pt_PT
dc.subjectReactive magnesium oxidept_PT
dc.subjectThermal conductivitypt_PT
dc.subjectAlternative binderpt_PT
dc.subjectConcretept_PT
dc.titleThermal performance of concrete with reactive magnesium oxide as an alternative binderpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage12pt_PT
oaire.citation.issue10pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleSustainabilitypt_PT
oaire.citation.volume14pt_PT
person.familyNameForero Valencia
person.familyNameCaneiras Bravo
person.familyNamePacheco
person.familyNameCaliço Lopes de Brito
person.familyNameFaria Rocha Evangelista
person.givenNameJavier Andres
person.givenNameMiguel Nuno
person.givenNameJoão
person.givenNameJorge Manuel
person.givenNameLuís Manuel
person.identifierhttps://scholar.google.pt/citations?user=vhX8t6UAAAAJ&hl=pt-PT
person.identifier1007584
person.identifierA-4299-2008
person.identifierB-9864-2011
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person.identifier.ciencia-idC01B-BFA5-7209
person.identifier.ciencia-idD414-B33B-01E0
person.identifier.ciencia-id921D-3921-8308
person.identifier.ciencia-idA612-1A5B-D93D
person.identifier.orcid0000-0002-8768-3152
person.identifier.orcid0000-0003-0393-4039
person.identifier.orcid0000-0001-9348-1226
person.identifier.orcid0000-0001-6766-2736
person.identifier.orcid0000-0001-8406-6864
person.identifier.ridR-2558-2016
person.identifier.scopus-author-id7103121011
person.identifier.scopus-author-id56800010700
person.identifier.scopus-author-id7003285554
person.identifier.scopus-author-id57201241744
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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