Potential reactivity of granitic rocks. Petrographic characterization vs accelerated expansion tests

Detalhes bibliográficos
Autor(a) principal: RAMOS,V.
Data de Publicação: 2016
Outros Autores: FERNANDES,I., SILVA,A. S., SOARES,D., NORONHA,F.
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=S1983-41952016000100066
Resumo: Several cases of alkali-silica reaction involving granitic aggregates have been diagnosed in damaged concrete structures in Portugal. Nonetheless, this kind of rock is usually regarded as slow/late reactive or even non-reactive to alkalis. Granitic rocks are widely exploited in Northern and Central Portugal, representing almost half of the produced aggregates in this country. Project IMPROVE rose from the need to accurately diagnose the potential reactivity of granites to alkalis. The study involved about forty granites collected from different regions in Portugal, from which the results of eight samples are being presented in this paper. The tests carried out include the petrographic analyses of the aggregates and mortar and concrete expansion tests. It was concluded that the content of microcrystalline quartz correlates better with the results of AAR-4.1 than with the other expansion tests.
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spelling Potential reactivity of granitic rocks. Petrographic characterization vs accelerated expansion testsalkali-silica reactiongranitespetrographyexpansion testsperformanceSeveral cases of alkali-silica reaction involving granitic aggregates have been diagnosed in damaged concrete structures in Portugal. Nonetheless, this kind of rock is usually regarded as slow/late reactive or even non-reactive to alkalis. Granitic rocks are widely exploited in Northern and Central Portugal, representing almost half of the produced aggregates in this country. Project IMPROVE rose from the need to accurately diagnose the potential reactivity of granites to alkalis. The study involved about forty granites collected from different regions in Portugal, from which the results of eight samples are being presented in this paper. The tests carried out include the petrographic analyses of the aggregates and mortar and concrete expansion tests. It was concluded that the content of microcrystalline quartz correlates better with the results of AAR-4.1 than with the other expansion tests.IBRACON - Instituto Brasileiro do Concreto2016-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952016000100066Revista IBRACON de Estruturas e Materiais v.9 n.1 2016reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/S1983-41952016000100005info:eu-repo/semantics/openAccessRAMOS,V.FERNANDES,I.SILVA,A. S.SOARES,D.NORONHA,F.eng2016-02-15T00:00:00Zoai:scielo:S1983-41952016000100066Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2016-02-15T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false
dc.title.none.fl_str_mv Potential reactivity of granitic rocks. Petrographic characterization vs accelerated expansion tests
title Potential reactivity of granitic rocks. Petrographic characterization vs accelerated expansion tests
spellingShingle Potential reactivity of granitic rocks. Petrographic characterization vs accelerated expansion tests
RAMOS,V.
alkali-silica reaction
granites
petrography
expansion tests
performance
title_short Potential reactivity of granitic rocks. Petrographic characterization vs accelerated expansion tests
title_full Potential reactivity of granitic rocks. Petrographic characterization vs accelerated expansion tests
title_fullStr Potential reactivity of granitic rocks. Petrographic characterization vs accelerated expansion tests
title_full_unstemmed Potential reactivity of granitic rocks. Petrographic characterization vs accelerated expansion tests
title_sort Potential reactivity of granitic rocks. Petrographic characterization vs accelerated expansion tests
author RAMOS,V.
author_facet RAMOS,V.
FERNANDES,I.
SILVA,A. S.
SOARES,D.
NORONHA,F.
author_role author
author2 FERNANDES,I.
SILVA,A. S.
SOARES,D.
NORONHA,F.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv RAMOS,V.
FERNANDES,I.
SILVA,A. S.
SOARES,D.
NORONHA,F.
dc.subject.por.fl_str_mv alkali-silica reaction
granites
petrography
expansion tests
performance
topic alkali-silica reaction
granites
petrography
expansion tests
performance
description Several cases of alkali-silica reaction involving granitic aggregates have been diagnosed in damaged concrete structures in Portugal. Nonetheless, this kind of rock is usually regarded as slow/late reactive or even non-reactive to alkalis. Granitic rocks are widely exploited in Northern and Central Portugal, representing almost half of the produced aggregates in this country. Project IMPROVE rose from the need to accurately diagnose the potential reactivity of granites to alkalis. The study involved about forty granites collected from different regions in Portugal, from which the results of eight samples are being presented in this paper. The tests carried out include the petrographic analyses of the aggregates and mortar and concrete expansion tests. It was concluded that the content of microcrystalline quartz correlates better with the results of AAR-4.1 than with the other expansion tests.
publishDate 2016
dc.date.none.fl_str_mv 2016-02-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952016000100066
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dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1983-41952016000100005
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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.9 n.1 2016
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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