A study on the compressive strength and microstructure characteristic of alkali-activated metakaolin cement

Detalhes bibliográficos
Autor(a) principal: Karatas,Mehmet
Data de Publicação: 2019
Outros Autores: Dener,Murat, Mohabbi,Mehrzad, Benli,Ahmet
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Matéria (Rio de Janeiro. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000400327
Resumo: ABSTRACT The main purpose of this study was to investigate the compressive strength and microstructure characteristic of alkali-activated metakaolin cement (AAMC). In accordance with this purpose, besides the pure metakaolin activation five other mixtures were designed by substitution of different OPC ratios instead of metakaolin (MK) from 0 to 25 (5, 10, 15, 20, 25% OPC). AAMC was activated with sodium silicate (Na2SiO3) of modulus Ms = SiO2/Na2O = 3.1 and NaOH solutions (32% of NaOH, 68% of water by mass). The ratio of liquid/solid (L/S) was kept constant at 0.65. All specimens were cured at 70 °C for 72 hours then kept in room conditions until the days that experiments were performed. Compressive strength and UPV experiment tests were carried out on all specimens at different curing periods of 3,14,28 and 90 days. In addition, the microstructure of 28 days alkali-activated metakaolin cements were analyzed with scanning electron microscope (SEM). The results showed that AAMC specimens reached the desired strength and major part of the final strength was gained at the end of 3 days of curing.
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spelling A study on the compressive strength and microstructure characteristic of alkali-activated metakaolin cementAlkali activated cementGeopolymerMetakaolinmicrostructureUPVMagnetitesilicafunctionalizationcore-shell structureABSTRACT The main purpose of this study was to investigate the compressive strength and microstructure characteristic of alkali-activated metakaolin cement (AAMC). In accordance with this purpose, besides the pure metakaolin activation five other mixtures were designed by substitution of different OPC ratios instead of metakaolin (MK) from 0 to 25 (5, 10, 15, 20, 25% OPC). AAMC was activated with sodium silicate (Na2SiO3) of modulus Ms = SiO2/Na2O = 3.1 and NaOH solutions (32% of NaOH, 68% of water by mass). The ratio of liquid/solid (L/S) was kept constant at 0.65. All specimens were cured at 70 °C for 72 hours then kept in room conditions until the days that experiments were performed. Compressive strength and UPV experiment tests were carried out on all specimens at different curing periods of 3,14,28 and 90 days. In addition, the microstructure of 28 days alkali-activated metakaolin cements were analyzed with scanning electron microscope (SEM). The results showed that AAMC specimens reached the desired strength and major part of the final strength was gained at the end of 3 days of curing.Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH22019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000400327Matéria (Rio de Janeiro) v.24 n.4 2019reponame:Matéria (Rio de Janeiro. Online)instname:Matéria (Rio de Janeiro. Online)instacron:RLAM10.1590/s1517-707620190004.0832info:eu-repo/semantics/openAccessKaratas,MehmetDener,MuratMohabbi,MehrzadBenli,Ahmeteng2019-11-21T00:00:00Zoai:scielo:S1517-70762019000400327Revistahttp://www.materia.coppe.ufrj.br/https://old.scielo.br/oai/scielo-oai.php||materia@labh2.coppe.ufrj.br1517-70761517-7076opendoar:2019-11-21T00:00Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)false
dc.title.none.fl_str_mv A study on the compressive strength and microstructure characteristic of alkali-activated metakaolin cement
title A study on the compressive strength and microstructure characteristic of alkali-activated metakaolin cement
spellingShingle A study on the compressive strength and microstructure characteristic of alkali-activated metakaolin cement
Karatas,Mehmet
Alkali activated cement
Geopolymer
Metakaolin
microstructure
UPV
Magnetite
silica
functionalization
core-shell structure
title_short A study on the compressive strength and microstructure characteristic of alkali-activated metakaolin cement
title_full A study on the compressive strength and microstructure characteristic of alkali-activated metakaolin cement
title_fullStr A study on the compressive strength and microstructure characteristic of alkali-activated metakaolin cement
title_full_unstemmed A study on the compressive strength and microstructure characteristic of alkali-activated metakaolin cement
title_sort A study on the compressive strength and microstructure characteristic of alkali-activated metakaolin cement
author Karatas,Mehmet
author_facet Karatas,Mehmet
Dener,Murat
Mohabbi,Mehrzad
Benli,Ahmet
author_role author
author2 Dener,Murat
Mohabbi,Mehrzad
Benli,Ahmet
author2_role author
author
author
dc.contributor.author.fl_str_mv Karatas,Mehmet
Dener,Murat
Mohabbi,Mehrzad
Benli,Ahmet
dc.subject.por.fl_str_mv Alkali activated cement
Geopolymer
Metakaolin
microstructure
UPV
Magnetite
silica
functionalization
core-shell structure
topic Alkali activated cement
Geopolymer
Metakaolin
microstructure
UPV
Magnetite
silica
functionalization
core-shell structure
description ABSTRACT The main purpose of this study was to investigate the compressive strength and microstructure characteristic of alkali-activated metakaolin cement (AAMC). In accordance with this purpose, besides the pure metakaolin activation five other mixtures were designed by substitution of different OPC ratios instead of metakaolin (MK) from 0 to 25 (5, 10, 15, 20, 25% OPC). AAMC was activated with sodium silicate (Na2SiO3) of modulus Ms = SiO2/Na2O = 3.1 and NaOH solutions (32% of NaOH, 68% of water by mass). The ratio of liquid/solid (L/S) was kept constant at 0.65. All specimens were cured at 70 °C for 72 hours then kept in room conditions until the days that experiments were performed. Compressive strength and UPV experiment tests were carried out on all specimens at different curing periods of 3,14,28 and 90 days. In addition, the microstructure of 28 days alkali-activated metakaolin cements were analyzed with scanning electron microscope (SEM). The results showed that AAMC specimens reached the desired strength and major part of the final strength was gained at the end of 3 days of curing.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01
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=S1517-70762019000400327
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000400327
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1517-707620190004.0832
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 Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
publisher.none.fl_str_mv Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
dc.source.none.fl_str_mv Matéria (Rio de Janeiro) v.24 n.4 2019
reponame:Matéria (Rio de Janeiro. Online)
instname:Matéria (Rio de Janeiro. Online)
instacron:RLAM
instname_str Matéria (Rio de Janeiro. Online)
instacron_str RLAM
institution RLAM
reponame_str Matéria (Rio de Janeiro. Online)
collection Matéria (Rio de Janeiro. Online)
repository.name.fl_str_mv Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)
repository.mail.fl_str_mv ||materia@labh2.coppe.ufrj.br
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