Blocks for civil construction made with the sediment deposited in the Candonga dam
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | REM - International Engineering Journal |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2019000100105 |
Resumo: | Abstract The use of the sediment deposited in the Candonga dam after the collapse of the Fundão dam is being considered as raw material for civil construction. Blocks were obtained by adding 5 % of sodium carbonate and 13 % of water to the dried dredged sediment, which was mixed and heat treated at 700 ºC and cooled slowly inside the oven to room temperature. The water absorption of the blocks was in the 12-16 % range, the loss of mass in water was (0.01±0.01) %, the density was (1.95±0.03) g/cm3, the compression strength was (11.05±1.29) MPa (reference value ≥ 1.7 MPa), and the flexural strength was (4.42±0.69) MPa (reference value ≥ 3.5 MPa). Small cracks and pores, as well as the growth of white spots (efflorescence) were observed on the surface of the blocks, which can be avoided or attenuated by improving the compaction pressure and the heat treatment. |
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REM - International Engineering Journal |
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Blocks for civil construction made with the sediment deposited in the Candonga damCandongadredged sedimentblockscivil constructionfluxingheat treatmentAbstract The use of the sediment deposited in the Candonga dam after the collapse of the Fundão dam is being considered as raw material for civil construction. Blocks were obtained by adding 5 % of sodium carbonate and 13 % of water to the dried dredged sediment, which was mixed and heat treated at 700 ºC and cooled slowly inside the oven to room temperature. The water absorption of the blocks was in the 12-16 % range, the loss of mass in water was (0.01±0.01) %, the density was (1.95±0.03) g/cm3, the compression strength was (11.05±1.29) MPa (reference value ≥ 1.7 MPa), and the flexural strength was (4.42±0.69) MPa (reference value ≥ 3.5 MPa). Small cracks and pores, as well as the growth of white spots (efflorescence) were observed on the surface of the blocks, which can be avoided or attenuated by improving the compaction pressure and the heat treatment.Fundação Gorceix2019-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2019000100105REM - International Engineering Journal v.72 n.1 2019reponame:REM - International Engineering Journalinstname:Fundação Gorceix (FG)instacron:FG10.1590/0370-44672017720198info:eu-repo/semantics/openAccessMachado,Mayare de Souza Moura MacielSantos,Ana Maria MatildesFreire,Carolina BracciniGuimarães,Ana Cláudia Pinto DabésLameiras,Fernando Soareseng2019-01-31T00:00:00Zoai:scielo:S2448-167X2019000100105Revistahttps://www.rem.com.br/?lang=pt-brPRIhttps://old.scielo.br/oai/scielo-oai.php||editor@rem.com.br2448-167X2448-167Xopendoar:2019-01-31T00:00REM - International Engineering Journal - Fundação Gorceix (FG)false |
dc.title.none.fl_str_mv |
Blocks for civil construction made with the sediment deposited in the Candonga dam |
title |
Blocks for civil construction made with the sediment deposited in the Candonga dam |
spellingShingle |
Blocks for civil construction made with the sediment deposited in the Candonga dam Machado,Mayare de Souza Moura Maciel Candonga dredged sediment blocks civil construction fluxing heat treatment |
title_short |
Blocks for civil construction made with the sediment deposited in the Candonga dam |
title_full |
Blocks for civil construction made with the sediment deposited in the Candonga dam |
title_fullStr |
Blocks for civil construction made with the sediment deposited in the Candonga dam |
title_full_unstemmed |
Blocks for civil construction made with the sediment deposited in the Candonga dam |
title_sort |
Blocks for civil construction made with the sediment deposited in the Candonga dam |
author |
Machado,Mayare de Souza Moura Maciel |
author_facet |
Machado,Mayare de Souza Moura Maciel Santos,Ana Maria Matildes Freire,Carolina Braccini Guimarães,Ana Cláudia Pinto Dabés Lameiras,Fernando Soares |
author_role |
author |
author2 |
Santos,Ana Maria Matildes Freire,Carolina Braccini Guimarães,Ana Cláudia Pinto Dabés Lameiras,Fernando Soares |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Machado,Mayare de Souza Moura Maciel Santos,Ana Maria Matildes Freire,Carolina Braccini Guimarães,Ana Cláudia Pinto Dabés Lameiras,Fernando Soares |
dc.subject.por.fl_str_mv |
Candonga dredged sediment blocks civil construction fluxing heat treatment |
topic |
Candonga dredged sediment blocks civil construction fluxing heat treatment |
description |
Abstract The use of the sediment deposited in the Candonga dam after the collapse of the Fundão dam is being considered as raw material for civil construction. Blocks were obtained by adding 5 % of sodium carbonate and 13 % of water to the dried dredged sediment, which was mixed and heat treated at 700 ºC and cooled slowly inside the oven to room temperature. The water absorption of the blocks was in the 12-16 % range, the loss of mass in water was (0.01±0.01) %, the density was (1.95±0.03) g/cm3, the compression strength was (11.05±1.29) MPa (reference value ≥ 1.7 MPa), and the flexural strength was (4.42±0.69) MPa (reference value ≥ 3.5 MPa). Small cracks and pores, as well as the growth of white spots (efflorescence) were observed on the surface of the blocks, which can be avoided or attenuated by improving the compaction pressure and the heat treatment. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-03-01 |
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=S2448-167X2019000100105 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2019000100105 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0370-44672017720198 |
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 |
Fundação Gorceix |
publisher.none.fl_str_mv |
Fundação Gorceix |
dc.source.none.fl_str_mv |
REM - International Engineering Journal v.72 n.1 2019 reponame:REM - International Engineering Journal instname:Fundação Gorceix (FG) instacron:FG |
instname_str |
Fundação Gorceix (FG) |
instacron_str |
FG |
institution |
FG |
reponame_str |
REM - International Engineering Journal |
collection |
REM - International Engineering Journal |
repository.name.fl_str_mv |
REM - International Engineering Journal - Fundação Gorceix (FG) |
repository.mail.fl_str_mv |
||editor@rem.com.br |
_version_ |
1754734691032760320 |