Synergic effects between mineral admixtures on strength and microstructure of concretes
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , |
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. |
id |
IBRACON-1_d212819eebb563656ae8f976d1e43ff9 |
---|---|
oai_identifier_str |
oai:scielo:S1983-41952020000600207 |
network_acronym_str |
IBRACON-1 |
network_name_str |
Revista IBRACON de Estruturas e Materiais |
repository_id_str |
|
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 |
eu_rights_str_mv |
openAccess |
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 |
_version_ |
1754193606155960320 |