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Water Resistance of Compressed Earth Blocks Stabilised with Thermoactivated Recycled Cement

2024-11Artigo científico Acesso aberto
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dc.contributor.authorCruz, Ricardo
dc.contributor.authorBogas, José Alexandre
dc.contributor.authorBalboa, Andrea
dc.contributor.authorFaria, Paulina
dc.contributor.institutionCERIS - Polo NOVA
dc.contributor.institutionDEC - Departamento de Engenharia Civil
dc.contributor.pblMolecular Diversity Preservation International (MDPI)
dc.date.accessioned2025-02-21T21:19:00Z
dc.date.available2025-02-21T21:19:00Z
dc.date.issued2024-11
dc.description© 2024 by the authors. Licensee MDPI, Basel, Switzerland.
dc.description.abstractLow water resistance is the main shortcoming of unfired earth materials, requiring chemical stabilisation for some durable applications. Ordinary Portland cement (PC) is an efficient stabiliser, but it goes against the ecological and sustainable nature of earth construction. This study explores the use of low-carbon thermoactivated recycled cement (RC) obtained from old cement waste as a new eco-efficient alternative to PC in the stabilisation of compressed earth blocks (CEBs). The objective is to improve the durability of the CEB masonry even when applied in direct contact with water, without compromising its eco-efficiency. The water resistance of the CEBs with 0% (unstabilised) and 5% and 10% (wt. of earth) stabiliser and partial to total replacement of PC with RC (0, 20, 50, 100% wt.) was evaluated in terms of compressive strength under different moisture contents, immersion and capillary water absorption, low-pressure water absorption, water permeability and water erosion. Low absorption and high resistance to water erosion were achieved in stabilised CEBs, regardless of the type of cement used. The incorporation of RC increased the total porosity and water absorption of the CEBs compared to PC, but significantly improved the water resistance of the unstabilised blocks. The eco-friendlier RC proved to be a promising alternative to PC stabilisation.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent5809279
dc.identifier.doi10.3390/ma17225617
dc.identifier.issn1996-1944
dc.identifier.otherPURE: 104740753
dc.identifier.otherPURE UUID: 6b279527-2e6d-49c0-9ea9-6a97b0b2a43d
dc.identifier.otherScopus: 85210570021
dc.identifier.otherWOS: 001365594300001
dc.identifier.otherPubMed: 39597440
dc.identifier.otherORCID: /0000-0003-0372-949X/work/178665568
dc.identifier.urihttp://hdl.handle.net/10362/179570
dc.identifier.urlhttps://www.scopus.com/pages/publications/85210570021
dc.language.isoeng
dc.peerreviewedyes
dc.relationFunding Information: info:eu-repo/grantAgreement/FCT/Concurso de Projetos IC&DT em Todos os Domínios Científicos/PTDC%2FECI-CON%2F0704%2F2021/PT
dc.relationinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04625%2F2020/PT
dc.relationCivil Engineering Research and Innovation for Sustainability
dc.subjectCEB
dc.subjectchemical stabilisation
dc.subjectcompressive strength
dc.subjectearth masonry unit
dc.subjecteco-efficiency
dc.subjectrecycled binder
dc.subjectwater durability
dc.subjectGeneral Materials Science
dc.subjectCondensed Matter Physics
dc.subjectSDG 8 - Decent Work and Economic Growth
dc.titleWater Resistance of Compressed Earth Blocks Stabilised with Thermoactivated Recycled Cementen
dc.typejournal article
degois.publication.issue22
degois.publication.titleMaterials
degois.publication.volume17
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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