Shrinkage and porosity in concretes produced with recycled concrete aggregate and rice husk ash

Detalhes bibliográficos
Autor(a) principal: CECCONELLO,V.
Data de Publicação: 2019
Outros Autores: C.SARTORI,B. R., .KULAKOWSKI,M. P, KAZMIERCZAK,C. S., MANCIO,M.
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=S1983-41952019000300694
Resumo: Abstract The admixture of recycled concrete aggregates (RCA) in new concretes is an interesting alternative in the efforts to mitigate environmental impacts. RCA may increase porosity and change properties of concretes. Rice husk ash (RHA) is employed as supplementary cementitious material may improve concrete properties. The present study investigated the shrinkage of concrete prepared with RCA and RHA, proposing a mathematical model to explain the phenomenon. Concretes were produced with 25% and 50% of coarse recycled aggregate as replacement of natural aggregate, 0%, 10%, and 20% of RHA as replacement of cement, and a water-to-binder ratio of 0.64. Water absorption and capillary and total porosities were analyzed on day 28. Shrinkage tests were conducted on days 1, 4, 7, 14, 28, 63, 91, and 112. The results point to a significant interaction between RHA and RCA.
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spelling Shrinkage and porosity in concretes produced with recycled concrete aggregate and rice husk ashrecycled concrete aggregaterice husk ashshrinkageporosityAbstract The admixture of recycled concrete aggregates (RCA) in new concretes is an interesting alternative in the efforts to mitigate environmental impacts. RCA may increase porosity and change properties of concretes. Rice husk ash (RHA) is employed as supplementary cementitious material may improve concrete properties. The present study investigated the shrinkage of concrete prepared with RCA and RHA, proposing a mathematical model to explain the phenomenon. Concretes were produced with 25% and 50% of coarse recycled aggregate as replacement of natural aggregate, 0%, 10%, and 20% of RHA as replacement of cement, and a water-to-binder ratio of 0.64. Water absorption and capillary and total porosities were analyzed on day 28. Shrinkage tests were conducted on days 1, 4, 7, 14, 28, 63, 91, and 112. The results point to a significant interaction between RHA and RCA.IBRACON - Instituto Brasileiro do Concreto2019-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952019000300694Revista IBRACON de Estruturas e Materiais v.12 n.3 2019reponame:Revista IBRACON de Estruturas e Materiaisinstname:Instituto Brasileiro do Concreto (IBRACON)instacron:IBRACON10.1590/s1983-41952019000300013info:eu-repo/semantics/openAccessCECCONELLO,V.C.SARTORI,B. R..KULAKOWSKI,M. PKAZMIERCZAK,C. S.MANCIO,M.eng2019-07-16T00:00:00Zoai:scielo:S1983-41952019000300694Revistahttp://www.revistas.ibracon.org.br/index.php/riemhttps://old.scielo.br/oai/scielo-oai.phpeditores.riem@gmail.com||arlene@ibracon.org.br1983-41951983-4195opendoar:2019-07-16T00:00Revista IBRACON de Estruturas e Materiais - Instituto Brasileiro do Concreto (IBRACON)false
dc.title.none.fl_str_mv Shrinkage and porosity in concretes produced with recycled concrete aggregate and rice husk ash
title Shrinkage and porosity in concretes produced with recycled concrete aggregate and rice husk ash
spellingShingle Shrinkage and porosity in concretes produced with recycled concrete aggregate and rice husk ash
CECCONELLO,V.
recycled concrete aggregate
rice husk ash
shrinkage
porosity
title_short Shrinkage and porosity in concretes produced with recycled concrete aggregate and rice husk ash
title_full Shrinkage and porosity in concretes produced with recycled concrete aggregate and rice husk ash
title_fullStr Shrinkage and porosity in concretes produced with recycled concrete aggregate and rice husk ash
title_full_unstemmed Shrinkage and porosity in concretes produced with recycled concrete aggregate and rice husk ash
title_sort Shrinkage and porosity in concretes produced with recycled concrete aggregate and rice husk ash
author CECCONELLO,V.
author_facet CECCONELLO,V.
C.SARTORI,B. R.
.KULAKOWSKI,M. P
KAZMIERCZAK,C. S.
MANCIO,M.
author_role author
author2 C.SARTORI,B. R.
.KULAKOWSKI,M. P
KAZMIERCZAK,C. S.
MANCIO,M.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv CECCONELLO,V.
C.SARTORI,B. R.
.KULAKOWSKI,M. P
KAZMIERCZAK,C. S.
MANCIO,M.
dc.subject.por.fl_str_mv recycled concrete aggregate
rice husk ash
shrinkage
porosity
topic recycled concrete aggregate
rice husk ash
shrinkage
porosity
description Abstract The admixture of recycled concrete aggregates (RCA) in new concretes is an interesting alternative in the efforts to mitigate environmental impacts. RCA may increase porosity and change properties of concretes. Rice husk ash (RHA) is employed as supplementary cementitious material may improve concrete properties. The present study investigated the shrinkage of concrete prepared with RCA and RHA, proposing a mathematical model to explain the phenomenon. Concretes were produced with 25% and 50% of coarse recycled aggregate as replacement of natural aggregate, 0%, 10%, and 20% of RHA as replacement of cement, and a water-to-binder ratio of 0.64. Water absorption and capillary and total porosities were analyzed on day 28. Shrinkage tests were conducted on days 1, 4, 7, 14, 28, 63, 91, and 112. The results point to a significant interaction between RHA and RCA.
publishDate 2019
dc.date.none.fl_str_mv 2019-06-01
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=S1983-41952019000300694
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952019000300694
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1983-41952019000300013
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.12 n.3 2019
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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