Analyses of microstructural properties of VA/VeoVA copolymer modified cement pastes

Detalhes bibliográficos
Autor(a) principal: Gomes,Carlos Eduardo M.
Data de Publicação: 2005
Outros Autores: Ferreira,Osny P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Polímeros (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282005000300009
Resumo: Recently, modern techniques have been applied for analysis of the influence of polymers on microstructural properties of Portland cement, such as Thermogravimetric Analyses (TG), Scanning Electronic Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FT-IR) and Mercury Intrusion Porosimetry (MIP). In this study, thermogravimetric analyses were used to study the influence of vinyl acetate-versatic vinylester copolymer (VA/VeoVA) in seven pastes of 28-day old Portland cement, in which distinct polymer contents and water/cement ratios were employed. In addition, analyses of FT-IR and MIP on Portland cement pastes modified by the copolymer were employed. The results showed that the addition of polymer interferes significantly in the reduction of Portlandite formation and increases the porosity of the matrices. A possible chemical interaction between the copolymer and hydrated products of Portland cement was also observed.
id ABPO-1_d15b1d93942986f4d022dbe0536bee1e
oai_identifier_str oai:scielo:S0104-14282005000300009
network_acronym_str ABPO-1
network_name_str Polímeros (São Carlos. Online)
repository_id_str
spelling Analyses of microstructural properties of VA/VeoVA copolymer modified cement pastesCement pastemodified mortarsVA/VeoVA copolymerRecently, modern techniques have been applied for analysis of the influence of polymers on microstructural properties of Portland cement, such as Thermogravimetric Analyses (TG), Scanning Electronic Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FT-IR) and Mercury Intrusion Porosimetry (MIP). In this study, thermogravimetric analyses were used to study the influence of vinyl acetate-versatic vinylester copolymer (VA/VeoVA) in seven pastes of 28-day old Portland cement, in which distinct polymer contents and water/cement ratios were employed. In addition, analyses of FT-IR and MIP on Portland cement pastes modified by the copolymer were employed. The results showed that the addition of polymer interferes significantly in the reduction of Portlandite formation and increases the porosity of the matrices. A possible chemical interaction between the copolymer and hydrated products of Portland cement was also observed.Associação Brasileira de Polímeros2005-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282005000300009Polímeros v.15 n.3 2005reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/S0104-14282005000300009info:eu-repo/semantics/openAccessGomes,Carlos Eduardo M.Ferreira,Osny P.eng2005-11-16T00:00:00Zoai:scielo:S0104-14282005000300009Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2005-11-16T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false
dc.title.none.fl_str_mv Analyses of microstructural properties of VA/VeoVA copolymer modified cement pastes
title Analyses of microstructural properties of VA/VeoVA copolymer modified cement pastes
spellingShingle Analyses of microstructural properties of VA/VeoVA copolymer modified cement pastes
Gomes,Carlos Eduardo M.
Cement paste
modified mortars
VA/VeoVA copolymer
title_short Analyses of microstructural properties of VA/VeoVA copolymer modified cement pastes
title_full Analyses of microstructural properties of VA/VeoVA copolymer modified cement pastes
title_fullStr Analyses of microstructural properties of VA/VeoVA copolymer modified cement pastes
title_full_unstemmed Analyses of microstructural properties of VA/VeoVA copolymer modified cement pastes
title_sort Analyses of microstructural properties of VA/VeoVA copolymer modified cement pastes
author Gomes,Carlos Eduardo M.
author_facet Gomes,Carlos Eduardo M.
Ferreira,Osny P.
author_role author
author2 Ferreira,Osny P.
author2_role author
dc.contributor.author.fl_str_mv Gomes,Carlos Eduardo M.
Ferreira,Osny P.
dc.subject.por.fl_str_mv Cement paste
modified mortars
VA/VeoVA copolymer
topic Cement paste
modified mortars
VA/VeoVA copolymer
description Recently, modern techniques have been applied for analysis of the influence of polymers on microstructural properties of Portland cement, such as Thermogravimetric Analyses (TG), Scanning Electronic Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FT-IR) and Mercury Intrusion Porosimetry (MIP). In this study, thermogravimetric analyses were used to study the influence of vinyl acetate-versatic vinylester copolymer (VA/VeoVA) in seven pastes of 28-day old Portland cement, in which distinct polymer contents and water/cement ratios were employed. In addition, analyses of FT-IR and MIP on Portland cement pastes modified by the copolymer were employed. The results showed that the addition of polymer interferes significantly in the reduction of Portlandite formation and increases the porosity of the matrices. A possible chemical interaction between the copolymer and hydrated products of Portland cement was also observed.
publishDate 2005
dc.date.none.fl_str_mv 2005-07-01
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=S0104-14282005000300009
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282005000300009
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0104-14282005000300009
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 Polímeros
publisher.none.fl_str_mv Associação Brasileira de Polímeros
dc.source.none.fl_str_mv Polímeros v.15 n.3 2005
reponame:Polímeros (São Carlos. Online)
instname:Associação Brasileira de Polímeros (ABPol)
instacron:ABPO
instname_str Associação Brasileira de Polímeros (ABPol)
instacron_str ABPO
institution ABPO
reponame_str Polímeros (São Carlos. Online)
collection Polímeros (São Carlos. Online)
repository.name.fl_str_mv Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)
repository.mail.fl_str_mv ||revista@abpol.org.br
_version_ 1754212584370733056

Registros relacionados