Physical-mechanical behavior of alkali-activated materials produced by the one-part method based on fly ash and rice husk ash

Detalhes bibliográficos
Autor(a) principal: Domingos,L. F. T.
Data de Publicação: 2022
Outros Autores: Azevedo,A. G. S., Strecker,K.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Cerâmica (São Paulo. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132022000200160
Resumo: Abstract The study on the physical-mechanical properties of alkali-activated materials (AAM) produced by the ‘one-part’ method was carried out. For this, residues such as fly ash and rice husk ash (RHA) were used. The alkaline activator (NaOH) was calcined together with RHA for 2 h at 750 °C. Dry mixes were prepared by replacing fly ash with 10%, 20%, and 30% by weight of the calcined material. The samples produced were characterized after 7 and 28 days of curing. The results showed that the investigated variables (calcined material content and curing time at room temperature) were responsible for important variations: compressive strength from 2.40 to 24.92 MPa, modulus of elasticity from 0.90 to 12.32 GPa, water absorption from 2.92% to 13.64%, apparent porosity from 4.82% to 20.02%, and density from 1.48 to 1.71 g/cm3. It was concluded that these variations were due to the high concentration of Na2O and SiO2 in the dry mixtures.
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spelling Physical-mechanical behavior of alkali-activated materials produced by the one-part method based on fly ash and rice husk ashalkali-activated materialsfly ashrice rusk ashone-part methodAbstract The study on the physical-mechanical properties of alkali-activated materials (AAM) produced by the ‘one-part’ method was carried out. For this, residues such as fly ash and rice husk ash (RHA) were used. The alkaline activator (NaOH) was calcined together with RHA for 2 h at 750 °C. Dry mixes were prepared by replacing fly ash with 10%, 20%, and 30% by weight of the calcined material. The samples produced were characterized after 7 and 28 days of curing. The results showed that the investigated variables (calcined material content and curing time at room temperature) were responsible for important variations: compressive strength from 2.40 to 24.92 MPa, modulus of elasticity from 0.90 to 12.32 GPa, water absorption from 2.92% to 13.64%, apparent porosity from 4.82% to 20.02%, and density from 1.48 to 1.71 g/cm3. It was concluded that these variations were due to the high concentration of Na2O and SiO2 in the dry mixtures.Associação Brasileira de Cerâmica2022-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132022000200160Cerâmica v.68 n.386 2022reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/0366-69132022683863213info:eu-repo/semantics/openAccessDomingos,L. F. T.Azevedo,A. G. S.Strecker,K.eng2022-07-05T00:00:00Zoai:scielo:S0366-69132022000200160Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2022-07-05T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Physical-mechanical behavior of alkali-activated materials produced by the one-part method based on fly ash and rice husk ash
title Physical-mechanical behavior of alkali-activated materials produced by the one-part method based on fly ash and rice husk ash
spellingShingle Physical-mechanical behavior of alkali-activated materials produced by the one-part method based on fly ash and rice husk ash
Domingos,L. F. T.
alkali-activated materials
fly ash
rice rusk ash
one-part method
title_short Physical-mechanical behavior of alkali-activated materials produced by the one-part method based on fly ash and rice husk ash
title_full Physical-mechanical behavior of alkali-activated materials produced by the one-part method based on fly ash and rice husk ash
title_fullStr Physical-mechanical behavior of alkali-activated materials produced by the one-part method based on fly ash and rice husk ash
title_full_unstemmed Physical-mechanical behavior of alkali-activated materials produced by the one-part method based on fly ash and rice husk ash
title_sort Physical-mechanical behavior of alkali-activated materials produced by the one-part method based on fly ash and rice husk ash
author Domingos,L. F. T.
author_facet Domingos,L. F. T.
Azevedo,A. G. S.
Strecker,K.
author_role author
author2 Azevedo,A. G. S.
Strecker,K.
author2_role author
author
dc.contributor.author.fl_str_mv Domingos,L. F. T.
Azevedo,A. G. S.
Strecker,K.
dc.subject.por.fl_str_mv alkali-activated materials
fly ash
rice rusk ash
one-part method
topic alkali-activated materials
fly ash
rice rusk ash
one-part method
description Abstract The study on the physical-mechanical properties of alkali-activated materials (AAM) produced by the ‘one-part’ method was carried out. For this, residues such as fly ash and rice husk ash (RHA) were used. The alkaline activator (NaOH) was calcined together with RHA for 2 h at 750 °C. Dry mixes were prepared by replacing fly ash with 10%, 20%, and 30% by weight of the calcined material. The samples produced were characterized after 7 and 28 days of curing. The results showed that the investigated variables (calcined material content and curing time at room temperature) were responsible for important variations: compressive strength from 2.40 to 24.92 MPa, modulus of elasticity from 0.90 to 12.32 GPa, water absorption from 2.92% to 13.64%, apparent porosity from 4.82% to 20.02%, and density from 1.48 to 1.71 g/cm3. It was concluded that these variations were due to the high concentration of Na2O and SiO2 in the dry mixtures.
publishDate 2022
dc.date.none.fl_str_mv 2022-06-01
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=S0366-69132022000200160
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132022000200160
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0366-69132022683863213
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 Associação Brasileira de Cerâmica
publisher.none.fl_str_mv Associação Brasileira de Cerâmica
dc.source.none.fl_str_mv Cerâmica v.68 n.386 2022
reponame:Cerâmica (São Paulo. Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Cerâmica (São Paulo. Online)
collection Cerâmica (São Paulo. Online)
repository.name.fl_str_mv Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ceram.abc@gmail.com||ceram.abc@gmail.com
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