Synergic effects between mineral admixtures on strength and microstructure of concretes

Detalhes bibliográficos
Autor(a) principal: Feltrin,Cristina Silva
Data de Publicação: 2020
Outros Autores: Isaia,Geraldo Cechella, Lübeck,André
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista IBRACON de Estruturas e Materiais
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952020000600207
Resumo: ABSTRACT: The present research aims at evaluating the physical, chemical and synergistic effects of substitution 25% cement in mass by limestone filler (LF), fly ash (FA) and rice husk ash (RHA), in similarity of physical condition (near grain size curves), and to compare the different binary and ternary mixtures of concrete after 28 days of wet curing, keeping the ratio water/cement (w/c) constant. The concrete samples were characterized in relation to the axial compressive strength and their microstructure using TG/DTA and MEV/EDS techniques. The CCA in the binary mixture was the one that obtained bigger compressive strength among the investigated mixtures, but when combined with a less reactive mineral addition in ternary mixtures, an overlap of chemical and physical effects occurred which resulted in better resistance and higher C-S-H formation in the hardened cement paste.
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spelling Synergic effects between mineral admixtures on strength and microstructure of concretessynergistic effectlimestone fillerfly ashrice husk ashconcreteABSTRACT: The present research aims at evaluating the physical, chemical and synergistic effects of substitution 25% cement in mass by limestone filler (LF), fly ash (FA) and rice husk ash (RHA), in similarity of physical condition (near grain size curves), and to compare the different binary and ternary mixtures of concrete after 28 days of wet curing, keeping the ratio water/cement (w/c) constant. The concrete samples were characterized in relation to the axial compressive strength and their microstructure using TG/DTA and MEV/EDS techniques. The CCA in the binary mixture was the one that obtained bigger compressive strength among the investigated mixtures, but when combined with a less reactive mineral addition in ternary mixtures, an overlap of chemical and physical effects occurred which resulted in better resistance and higher C-S-H formation in the hardened cement paste.IBRACON - Instituto Brasileiro do Concreto2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952020000600207Revista IBRACON de Estruturas e Materiais v.13 n.6 2020reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/s1983-41952020000600004info:eu-repo/semantics/openAccessFeltrin,Cristina SilvaIsaia,Geraldo CechellaLübeck,Andréeng2020-10-20T00:00:00Zoai:scielo:S1983-41952020000600207Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2020-10-20T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false
dc.title.none.fl_str_mv Synergic effects between mineral admixtures on strength and microstructure of concretes
title Synergic effects between mineral admixtures on strength and microstructure of concretes
spellingShingle Synergic effects between mineral admixtures on strength and microstructure of concretes
Feltrin,Cristina Silva
synergistic effect
limestone filler
fly ash
rice husk ash
concrete
title_short Synergic effects between mineral admixtures on strength and microstructure of concretes
title_full Synergic effects between mineral admixtures on strength and microstructure of concretes
title_fullStr Synergic effects between mineral admixtures on strength and microstructure of concretes
title_full_unstemmed Synergic effects between mineral admixtures on strength and microstructure of concretes
title_sort Synergic effects between mineral admixtures on strength and microstructure of concretes
author Feltrin,Cristina Silva
author_facet Feltrin,Cristina Silva
Isaia,Geraldo Cechella
Lübeck,André
author_role author
author2 Isaia,Geraldo Cechella
Lübeck,André
author2_role author
author
dc.contributor.author.fl_str_mv Feltrin,Cristina Silva
Isaia,Geraldo Cechella
Lübeck,André
dc.subject.por.fl_str_mv synergistic effect
limestone filler
fly ash
rice husk ash
concrete
topic synergistic effect
limestone filler
fly ash
rice husk ash
concrete
description ABSTRACT: The present research aims at evaluating the physical, chemical and synergistic effects of substitution 25% cement in mass by limestone filler (LF), fly ash (FA) and rice husk ash (RHA), in similarity of physical condition (near grain size curves), and to compare the different binary and ternary mixtures of concrete after 28 days of wet curing, keeping the ratio water/cement (w/c) constant. The concrete samples were characterized in relation to the axial compressive strength and their microstructure using TG/DTA and MEV/EDS techniques. The CCA in the binary mixture was the one that obtained bigger compressive strength among the investigated mixtures, but when combined with a less reactive mineral addition in ternary mixtures, an overlap of chemical and physical effects occurred which resulted in better resistance and higher C-S-H formation in the hardened cement paste.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
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=S1983-41952020000600207
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952020000600207
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1983-41952020000600004
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv IBRACON - Instituto Brasileiro do Concreto
publisher.none.fl_str_mv IBRACON - Instituto Brasileiro do Concreto
dc.source.none.fl_str_mv Revista IBRACON de Estruturas e Materiais v.13 n.6 2020
reponame:Revista IBRACON de Estruturas e Materiais
instname:Instituto Brasileiro do Concreto (IBRACON)
instacron:IBRACON
instname_str Instituto Brasileiro do Concreto (IBRACON)
instacron_str IBRACON
institution IBRACON
reponame_str Revista IBRACON de Estruturas e Materiais
collection Revista IBRACON de Estruturas e Materiais
repository.name.fl_str_mv Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)
repository.mail.fl_str_mv editores.riem@gmail.com||arlene@ibracon.org.br
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