Analyses of microstructural properties of VA/VeoVA copolymer modified cement pastes
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | |
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. |
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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 |