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Effect of type of curing and metakaolin replacement on air lime mortars for the durability of masonries

2021-10-08Artigo científico Acesso aberto
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dc.contributor.authorMonteiro, João
dc.contributor.authorSilva, Vitor
dc.contributor.authorFaria, Paulina
dc.contributor.institutionDEC - Departamento de Engenharia Civil
dc.contributor.pblMDPI - Multidisciplinary Digital Publishing Institute
dc.date.accessioned2021-11-09T23:21:41Z
dc.date.available2021-11-09T23:21:41Z
dc.date.issued2021-10-08
dc.description
dc.description.abstractThe interest in restoration and maintenance of old masonries towards their durability is nowadays combined with the concept of sustainability and the need to implement more suitable materials for building heritage interventions. This has led to the importance of having a better knowledge of air lime mortars, namely on the effect of pozzolanic additions, curing conditions and evolution at early stages. This study consisted in the characterization of mortars based on hydrated air lime and sand, with 1:2 (lime:sand) volumetric composition, with different weight percentages of substitution of lime by metakaolin (Mk): 0%, 10% and 20%. Mortar prisms were analyzed in three different curing environments: maritime (by the Atlantic Ocean), in laboratory humidity (95 ± 5% relative humidity, RH) and standard (65 ± 5% RH) conditioning. Tests were conducted to evaluate fresh and hardened properties of mortars, considering physical, chemical and mechanical performance at 28, 90 and 180 days. Results showed the viability of applying air lime-Mk mortars with curing conditions similar to the tested ones. In the standard curing, the mortar with 20% Mk revealed advantages in mechanical parameters. Concerning the behaviour towards water, improvements were shown at an early stage with the humid curing, while maritime curing benefited its behaviour for at least up to 6 months.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent25935457
dc.identifier.doi10.3390/infrastructures6100143
dc.identifier.issn2412-3811
dc.identifier.otherPURE: 34592332
dc.identifier.otherPURE UUID: bd83d57f-8e0f-4741-a9f7-9e4c5da4cdc4
dc.identifier.otherScopus: 85117305943
dc.identifier.otherORCID: /0000-0003-0372-949X/work/102891599
dc.identifier.urihttp://hdl.handle.net/10362/127472
dc.identifier.urlhttps://www.scopus.com/pages/publications/85117305943
dc.language.isoeng
dc.peerreviewedyes
dc.relationinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04625%2F2020/PT
dc.relationCivil Engineering Research and Innovation for Sustainability
dc.subjectAgeing
dc.subjectCuring conditions
dc.subjectHydrated air lime
dc.subjectMaritime natural exposure
dc.subjectMasonries durability
dc.subjectMetakaolin
dc.subjectMortars
dc.subjectPerformance
dc.subjectCivil and Structural Engineering
dc.subjectBuilding and Construction
dc.subjectGeneral Materials Science
dc.subjectGeotechnical Engineering and Engineering Geology
dc.subjectComputer Science Applications
dc.titleEffect of type of curing and metakaolin replacement on air lime mortars for the durability of masonriesen
dc.typejournal article
degois.publication.issue10
degois.publication.titleInfrastructures
degois.publication.volume6
dspace.entity.typePublication
oaire.awardNumberUIDB/04625/2020
oaire.awardTitleCivil Engineering Research and Innovation for Sustainability
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04625%2F2020/PT
oaire.fundingStream6817 - DCRRNI ID
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
relation.isProjectOfPublication8372fc65-bc5a-4ddc-94a6-1c8c6a06e922
relation.isProjectOfPublication.latestForDiscovery8372fc65-bc5a-4ddc-94a6-1c8c6a06e922

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