Logo do repositório
 
Publicação

A comprehensive mechanical and physico-chemical characterization of fly ash-based geopolymers

2025Artigo científico Acesso aberto
Ver registo simples
datacite.subject.fosEngenharia e Tecnologia::Engenharia Civil
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
datacite.subject.sdg13:Ação Climática
dc.contributor.authorSilva, Ana P. F.
dc.contributor.authorNatal, Ana Paula S.
dc.contributor.authorOliveira, Isaac
dc.contributor.authorBezerra, Ana J.B.
dc.contributor.authorBaldo, Arthur P.
dc.contributor.authorSilva, Adriano S.
dc.contributor.authorDiaz de Tuesta, Jose Luis
dc.contributor.authorPeres, José A.
dc.contributor.authorFerreira, Débora
dc.contributor.authorGomes, Helder T.
dc.date.accessioned2026-03-23T15:58:30Z
dc.date.available2026-03-23T15:58:30Z
dc.date.issued2025
dc.description.abstractThis work focuses on developing a predictive optimization method for geopolymer concrete, addressing both mechanical strength and water absorption. Despite numerous formulations proposed in the literature, no systematic method has been established to evaluate these properties simultaneously. This research addresses this gap by employing a Design of Experiments approach to systematically explore the effects of key variables such as NaOH molar concentration, sodium silicate-to-sodium hydroxide ratio, and alkaline solution-to-fly ash ratio. After 28 days, geopolymer concrete exhibits competitive compressive strength (geopolymer concrete: 25 MPa, reference Ordinary Portland concrete: 27 MPa), and after 365 days, its compressive strength surpasses that of traditional Ordinary Portland concrete (geopolymer concrete: 56 MPa, reference Ordinary Portland concrete: 27 MPa). Moreover, through Response Surface Methodology, an optimization model indicates that geopolymer concrete compressive strength can reach up to 64 MPa, with a strong influence from the alkaline solution-to-fly ash ratio. Additionally, the materials were characterized in terms of crystalline phases, surface chemistry, thermal stability, and surface area to gain a deeper understanding of the behaviour of these materials.eng
dc.description.sponsorshipThis work was supported by national funds supported this work through FCT/MCTES (PIDDAC): CIMO, UIDB/00690/2020 (DOI: 10.54499/UIDB/00690/2020) and UIDP/00690/2020 (DOI: 10.54499/UIDP/00690/2020); and SusTEC, LA/P/0007/2020 (DOI: 10.54499/LA/P/0007/2020). We would also like to thank the scientific collaboration under Base- UIDB/50020/2020, CQVR (UIDB/00616/2020). The authors are grateful to Sociedade Ponto Verde for the financial support through the project “Avaliação de Ciclo de Vida de materiais geopoliméricos obtidos a partir da valorização de resíduos sólidos urbanos”. Ana Paula Silva is supported by the doctoral Grant PRT/BD/153090/2021 financed by FCT and with funds from NORTE2020, under MIT Portugal Program. Jose L. Diaz De Tuesta acknowledges the financial support through the program of Atracción al Talento of Comunidad de Madrid (Spain) for the individual research grant and project with reference 2022-T1/AMB-23946, and through the program Consolidación Investigadora 2024 (CNS2024–154264) supported from Agencia Estatal de Investigación (Spain).
dc.identifier.citationSilva, Ana P. F.; Natal, Ana Paula S.; Oliveira, Isaac; Bezerra, Ana J.B.; Baldo, Arthur P.; Silva, Adriano S.; Diaz de Tuesta, Jose Luis; Peres, José A.; Ferreira, Débora; Gomes, Helder T. (2025). A comprehensive mechanical and physico-chemical characterization of fly ash-based geopolymers. Results in Engineering. ISSN 2590-1230. 28, p. 1-13
dc.identifier.doi10.1016/j.rineng.2025.108150
dc.identifier.issn2590-1230
dc.identifier.urihttp://hdl.handle.net/10198/36231
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
dc.relationMountain Research Center
dc.relationMonitoring of municipal waste streams and their transformation into geopolymers
dc.relationLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
dc.relationMountain Research Center
dc.relation.ispartofResults in Engineering
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectOptimization of Alkali-activated material
dc.subjectSustainable concrete
dc.subjectResponse surface methodology
dc.subjectMechanical property
dc.subjectCompressive strength
dc.titleA comprehensive mechanical and physico-chemical characterization of fly ash-based geopolymerseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberLA/P/0007/2020
oaire.awardNumberUIDP/00690/2020
oaire.awardNumberPRT/BD/153090/2021
oaire.awardNumberUIDB/50020/2020
oaire.awardNumberUIDB/00690/2020
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
oaire.awardTitleMountain Research Center
oaire.awardTitleMonitoring of municipal waste streams and their transformation into geopolymers
oaire.awardTitleLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
oaire.awardTitleMountain Research Center
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0007%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/PRT%2FBD%2F153090%2F2021/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50020%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.citation.endPage13
oaire.citation.startPage1
oaire.citation.titleResults in Engineering
oaire.citation.volume28
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamOE
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.affiliation.nameCeDRI, Instituto Politécnico de Bragança
person.familyNameSilva
person.familyNameBezerra
person.familyNameBaldo
person.familyNameSilva
person.familyNameFerreira
person.familyNameGomes
person.givenNameAna P. F.
person.givenNameAna J.B.
person.givenNameArthur P.
person.givenNameAdriano S.
person.givenNameDébora
person.givenNameHelder T.
person.identifierhttps://www.researchgate.net/profile/Ana-Ferreira-Da-Silva-3
person.identifier.ciencia-id991F-2DB8-3246
person.identifier.ciencia-id341B-2529-1112
person.identifier.ciencia-idD51C-88AB-48EE
person.identifier.ciencia-id3E14-5049-B09D
person.identifier.ciencia-idD81C-FDAD-4D8A
person.identifier.ciencia-id6218-1E19-13EE
person.identifier.orcid0000-0001-8979-8407
person.identifier.orcid0009-0000-7853-0667
person.identifier.orcid0000-0002-6795-2335
person.identifier.orcid0000-0002-5195-8265
person.identifier.orcid0000-0001-6898-2408
person.identifier.scopus-author-id35334023200
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublication729b6629-41f1-4699-9630-9a32f38df4e5
relation.isAuthorOfPublication8a84a0ac-8d0c-40a4-86b9-4be0b1f4f23f
relation.isAuthorOfPublication05ba5570-ef6e-47f0-9223-c6de23817e57
relation.isAuthorOfPublication3ba90ba4-aac8-4892-a30f-25a10bc27298
relation.isAuthorOfPublicationa4fa2eb4-17f1-46a1-ae8e-36f39ad25b39
relation.isAuthorOfPublication0eb96337-224a-4339-9918-334436fbbb99
relation.isAuthorOfPublication.latestForDiscovery0eb96337-224a-4339-9918-334436fbbb99
relation.isProjectOfPublication6255046e-bc79-4b82-8884-8b52074b4384
relation.isProjectOfPublication0aac8939-28c2-46f4-ab6b-439dba7f9942
relation.isProjectOfPublication91a402c0-2c8d-4e39-b8f0-245054eb302f
relation.isProjectOfPublication79ed495f-40dc-45d0-b98c-7e777db59e9b
relation.isProjectOfPublication29718e93-4989-42bb-bcbc-4daff3870b25
relation.isProjectOfPublication.latestForDiscovery6255046e-bc79-4b82-8884-8b52074b4384

Ficheiros

Principais
A mostrar 1 - 1 de 1
Miniatura
Nome:
1-s2.0-S2590123025041969-main.pdf
Tamanho:
6.31 MB
Formato:
Adobe Portable Document Format
Ver/Abrir
Licença
A mostrar 1 - 1 de 1
Miniatura indisponível
Nome:
license.txt
Tamanho:
1.75 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Ver/Abrir

Coleções

CIMO - Artigos em Revistas Indexados à WoS/Scopus