Physical-mechanical behavior of alkali-activated materials produced by the one-part method based on fly ash and rice husk ash
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
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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Cerâmica (São Paulo. Online) |
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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 |
_version_ |
1748936785077993472 |