Alkaline activation of cement pastes with desulfurization slag

Detalhes bibliográficos
Autor(a) principal: Costa,H. N.
Data de Publicação: 2021
Outros Autores: Noberto,C. C., Almeida,L. A., Nogueira,R. E. F. Q., Cabral,A. E. B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Cerâmica (São Paulo. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132021000400399
Resumo: Abstract The capability to recycle waste materials, such as steel slag, has appealed to the construction industry, as the cement industry faces a major challenge to reduce carbon dioxide (CO2) emissions into the atmosphere. This paper investigated the obtainment of cement pastes with Kanbara reactor desulfurization waste slag (KR slag) through alkaline activation using silicate and sodium hydroxide solutions. The mixtures were analyzed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), compressive strength, and physical property tests. The FTIR, XRD, and TGA results pointed to chemical activation, forming C-S-H and C-(A)-S-H gels. The formation of these compounds indicated the possibility of using KR slag in cementitious composites for civil construction.
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spelling Alkaline activation of cement pastes with desulfurization slagcementitious pastespecific residuechemical activationAbstract The capability to recycle waste materials, such as steel slag, has appealed to the construction industry, as the cement industry faces a major challenge to reduce carbon dioxide (CO2) emissions into the atmosphere. This paper investigated the obtainment of cement pastes with Kanbara reactor desulfurization waste slag (KR slag) through alkaline activation using silicate and sodium hydroxide solutions. The mixtures were analyzed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), compressive strength, and physical property tests. The FTIR, XRD, and TGA results pointed to chemical activation, forming C-S-H and C-(A)-S-H gels. The formation of these compounds indicated the possibility of using KR slag in cementitious composites for civil construction.Associação Brasileira de Cerâmica2021-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132021000400399Cerâmica v.67 n.384 2021reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/0366-69132021673843090info:eu-repo/semantics/openAccessCosta,H. N.Noberto,C. C.Almeida,L. A.Nogueira,R. E. F. Q.Cabral,A. E. B.eng2021-11-24T00:00:00Zoai:scielo:S0366-69132021000400399Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2021-11-24T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Alkaline activation of cement pastes with desulfurization slag
title Alkaline activation of cement pastes with desulfurization slag
spellingShingle Alkaline activation of cement pastes with desulfurization slag
Costa,H. N.
cementitious paste
specific residue
chemical activation
title_short Alkaline activation of cement pastes with desulfurization slag
title_full Alkaline activation of cement pastes with desulfurization slag
title_fullStr Alkaline activation of cement pastes with desulfurization slag
title_full_unstemmed Alkaline activation of cement pastes with desulfurization slag
title_sort Alkaline activation of cement pastes with desulfurization slag
author Costa,H. N.
author_facet Costa,H. N.
Noberto,C. C.
Almeida,L. A.
Nogueira,R. E. F. Q.
Cabral,A. E. B.
author_role author
author2 Noberto,C. C.
Almeida,L. A.
Nogueira,R. E. F. Q.
Cabral,A. E. B.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Costa,H. N.
Noberto,C. C.
Almeida,L. A.
Nogueira,R. E. F. Q.
Cabral,A. E. B.
dc.subject.por.fl_str_mv cementitious paste
specific residue
chemical activation
topic cementitious paste
specific residue
chemical activation
description Abstract The capability to recycle waste materials, such as steel slag, has appealed to the construction industry, as the cement industry faces a major challenge to reduce carbon dioxide (CO2) emissions into the atmosphere. This paper investigated the obtainment of cement pastes with Kanbara reactor desulfurization waste slag (KR slag) through alkaline activation using silicate and sodium hydroxide solutions. The mixtures were analyzed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), compressive strength, and physical property tests. The FTIR, XRD, and TGA results pointed to chemical activation, forming C-S-H and C-(A)-S-H gels. The formation of these compounds indicated the possibility of using KR slag in cementitious composites for civil construction.
publishDate 2021
dc.date.none.fl_str_mv 2021-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132021000400399
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132021000400399
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0366-69132021673843090
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Cerâmica
publisher.none.fl_str_mv Associação Brasileira de Cerâmica
dc.source.none.fl_str_mv Cerâmica v.67 n.384 2021
reponame:Cerâmica (São Paulo. Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Cerâmica (São Paulo. Online)
collection Cerâmica (São Paulo. Online)
repository.name.fl_str_mv Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ceram.abc@gmail.com||ceram.abc@gmail.com
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