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., Reis,I. C.
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=S0366-69132020000400373
Resumo: Abstract 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 wastecementitious hardened paste wasteXRD qualitative analysisRietveld refinementAbstract 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.Associação Brasileira de Cerâmica2020-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132020000400373Cerâmica v.66 n.380 2020reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/0366-69132020663802956info:eu-repo/semantics/openAccessSilva,L. A.Nahime,B. O.Lima,E. C.Akasaki,J. L.Reis,I. C.eng2020-11-03T00:00:00Zoai:scielo:S0366-69132020000400373Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2020-11-03T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv XRD investigation of cement pastes incorporating concrete floor polishing waste
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
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.
Reis,I. C.
author_role author
author2 Nahime,B. O.
Lima,E. C.
Akasaki,J. L.
Reis,I. C.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Silva,L. A.
Nahime,B. O.
Lima,E. C.
Akasaki,J. L.
Reis,I. C.
dc.subject.por.fl_str_mv cementitious hardened paste waste
XRD qualitative analysis
Rietveld refinement
topic cementitious hardened paste waste
XRD qualitative analysis
Rietveld refinement
description Abstract 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 2020-12-01
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=S0366-69132020000400373
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132020000400373
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0366-69132020663802956
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.66 n.380 2020
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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