XRD investigation of cement pastes incorporating concrete floor polishing waste

Detalhes bibliográficos
Autor(a) principal: Silva, L. A.
Data de Publicação: 2020
Outros Autores: Nahime, B. O., Lima, E. C., Akasaki, J. L. [UNESP], Reis, I. C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/0366-69132020663802956
http://hdl.handle.net/11449/211548
Resumo: The X-ray diffraction (XRD) technique has been widely used in order to investigate anhydrous and hydrated cement phases. In this study, XRD was used in order to analyze the concrete floor polishing waste (CFPW) and cementitious paste containing CFPW. The diffractograms obtained were compared with literature data in order to identify the phases of analyzed materials. Rietveld refinement of XRD pattern of paste containing 12% of CFPW addition was also carried out, in order to analyze calcite and aragonite structures, as these phases are calcium carbonate polymorphs that contribute to matrix filling. XRD pattern of CFPW showed a high concentration of carbonate phases, indicating that the concrete waste was carbonated. The CFPW addition in the cementitious matrix changed the hydrate cement products, as it induced the formation of carboaluminate phases, such as hemicarbonate. Calcite, which is a stable phase, contributed better to the filler effect, as its particles have higher volume than aragonite.
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spelling XRD investigation of cement pastes incorporating concrete floor polishing wasteInvestigação por DRX de pastas de cimento com incorporação de resíduo de polimento de pisos de concretocementitious hardened paste wasteXRD qualitative analysisRietveld refinementresíduo de pastas cimentíciasanálise qualitativa por DRXrefinamento RietveldThe X-ray diffraction (XRD) technique has been widely used in order to investigate anhydrous and hydrated cement phases. In this study, XRD was used in order to analyze the concrete floor polishing waste (CFPW) and cementitious paste containing CFPW. The diffractograms obtained were compared with literature data in order to identify the phases of analyzed materials. Rietveld refinement of XRD pattern of paste containing 12% of CFPW addition was also carried out, in order to analyze calcite and aragonite structures, as these phases are calcium carbonate polymorphs that contribute to matrix filling. XRD pattern of CFPW showed a high concentration of carbonate phases, indicating that the concrete waste was carbonated. The CFPW addition in the cementitious matrix changed the hydrate cement products, as it induced the formation of carboaluminate phases, such as hemicarbonate. Calcite, which is a stable phase, contributed better to the filler effect, as its particles have higher volume than aragonite.A técnica de difração de raios X (DRX) tem sido amplamente empregada para análise das fases anidras e hidratadas do cimento Portland. Neste estudo, a técnica de DRX foi empregada para análise do resíduo de polimento de pisos de concreto (RPPC) e de pasta cimentícia com adição de RPPC. Os padrões de DRX obtidos foram comparados com dados da literatura para identificação das fases dos materiais analisados. O refinamento Rietveld do padrão de DRX da pasta com adição de 12% de RPPC foi realizado com o objetivo de analisar as estruturas das fases calcita e aragonita, as quais são polimorfos do carbonato de cálcio que contribuem para o empacotamento de matrizes cimentícias. O padrão de difração do RPPC indicou elevada concentração de carbonatos, indicando a carbonatação do resíduo. A adição de RPPC em matriz cimentícia modificou os produtos de hidratação do cimento, uma vez que o resíduo induziu a formação de carboaluminatos, como o hemicarbonato. A calcita, que é uma fase estável, contribuiu melhor para o efeito de preenchimento, pois suas partículas têm maior volume que a aragonita.Instituto Federal de Educação, Ciência e Tecnologia GoianoUniversidade Federal do TocantinsUniversidade Estadual Paulista, Faculdade de EngenhariaUniversidade Estadual Paulista, Faculdade de EngenhariaAssociação Brasileira de CerâmicaInstituto Federal de Educação, Ciência e Tecnologia GoianoUniversidade Federal do TocantinsUniversidade Estadual Paulista (Unesp)Silva, L. A.Nahime, B. O.Lima, E. C.Akasaki, J. L. [UNESP]Reis, I. C.2021-07-14T10:26:01Z2021-07-14T10:26:01Z2020-10-30info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article373-378application/pdfhttp://dx.doi.org/10.1590/0366-69132020663802956Cerâmica. Associação Brasileira de Cerâmica, v. 66, n. 380, p. 373-378, 2020.0366-69131678-4553http://hdl.handle.net/11449/21154810.1590/0366-69132020663802956S0366-69132020000400373S0366-69132020000400373.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCerâmicainfo:eu-repo/semantics/openAccess2023-10-16T06:10:05Zoai:repositorio.unesp.br:11449/211548Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:08:41.725451Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv XRD investigation of cement pastes incorporating concrete floor polishing waste
Investigação por DRX de pastas de cimento com incorporação de resíduo de polimento de pisos de concreto
title XRD investigation of cement pastes incorporating concrete floor polishing waste
spellingShingle XRD investigation of cement pastes incorporating concrete floor polishing waste
Silva, L. A.
cementitious hardened paste waste
XRD qualitative analysis
Rietveld refinement
resíduo de pastas cimentícias
análise qualitativa por DRX
refinamento Rietveld
title_short XRD investigation of cement pastes incorporating concrete floor polishing waste
title_full XRD investigation of cement pastes incorporating concrete floor polishing waste
title_fullStr XRD investigation of cement pastes incorporating concrete floor polishing waste
title_full_unstemmed XRD investigation of cement pastes incorporating concrete floor polishing waste
title_sort XRD investigation of cement pastes incorporating concrete floor polishing waste
author Silva, L. A.
author_facet Silva, L. A.
Nahime, B. O.
Lima, E. C.
Akasaki, J. L. [UNESP]
Reis, I. C.
author_role author
author2 Nahime, B. O.
Lima, E. C.
Akasaki, J. L. [UNESP]
Reis, I. C.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Instituto Federal de Educação, Ciência e Tecnologia Goiano
Universidade Federal do Tocantins
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Silva, L. A.
Nahime, B. O.
Lima, E. C.
Akasaki, J. L. [UNESP]
Reis, I. C.
dc.subject.por.fl_str_mv cementitious hardened paste waste
XRD qualitative analysis
Rietveld refinement
resíduo de pastas cimentícias
análise qualitativa por DRX
refinamento Rietveld
topic cementitious hardened paste waste
XRD qualitative analysis
Rietveld refinement
resíduo de pastas cimentícias
análise qualitativa por DRX
refinamento Rietveld
description The X-ray diffraction (XRD) technique has been widely used in order to investigate anhydrous and hydrated cement phases. In this study, XRD was used in order to analyze the concrete floor polishing waste (CFPW) and cementitious paste containing CFPW. The diffractograms obtained were compared with literature data in order to identify the phases of analyzed materials. Rietveld refinement of XRD pattern of paste containing 12% of CFPW addition was also carried out, in order to analyze calcite and aragonite structures, as these phases are calcium carbonate polymorphs that contribute to matrix filling. XRD pattern of CFPW showed a high concentration of carbonate phases, indicating that the concrete waste was carbonated. The CFPW addition in the cementitious matrix changed the hydrate cement products, as it induced the formation of carboaluminate phases, such as hemicarbonate. Calcite, which is a stable phase, contributed better to the filler effect, as its particles have higher volume than aragonite.
publishDate 2020
dc.date.none.fl_str_mv 2020-10-30
2021-07-14T10:26:01Z
2021-07-14T10:26:01Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1590/0366-69132020663802956
Cerâmica. Associação Brasileira de Cerâmica, v. 66, n. 380, p. 373-378, 2020.
0366-6913
1678-4553
http://hdl.handle.net/11449/211548
10.1590/0366-69132020663802956
S0366-69132020000400373
S0366-69132020000400373.pdf
url http://dx.doi.org/10.1590/0366-69132020663802956
http://hdl.handle.net/11449/211548
identifier_str_mv Cerâmica. Associação Brasileira de Cerâmica, v. 66, n. 380, p. 373-378, 2020.
0366-6913
1678-4553
10.1590/0366-69132020663802956
S0366-69132020000400373
S0366-69132020000400373.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Cerâmica
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 373-378
application/pdf
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 SciELO
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128467185696768

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