Crack filling in concrete by addition of bacillus subtilis spores – Preliminary study
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.15446/dyna.v85n205.68591 http://hdl.handle.net/11449/221244 |
Resumo: | This study aimed to analyze the performance of two concrete mixtures with the addition of B. subtilis spores regarding their capacity of filling cracks during the curing time, evaluating whether the addition can influence the compressive strength of the concrete. For so, six concrete mixtures were studied divided in two mix compositions: 1:1:2 and 1:2:3 (cement: sand: gravel) with w/c of 0.33 and 0.45, respectively. For each composition were added concentrations of 0, 0.3x108 or 1.2x108 of B. subtilis spores/mL. The results showed that all the samples with spores addition presented crystals precipitation, possibly calcium carbonate, that visually filled the cracks. However, more studies of microstructural analysis should be conducted to prove that the cracks were closed. The compressive strength presented satisfactory results, because the addition of 1.2x108 spores/mL did not present significant differences in compressive strength at probability level of 5%, when compared to the reference concrete. |
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Repositório Institucional da UNESP |
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spelling |
Crack filling in concrete by addition of bacillus subtilis spores – Preliminary studyRelleno de fisuras en concreto por la adición de esporas de Bacilos subtilis - Estudio preliminarBacillus subtilisBioconcreteConcrete with addition of sporesCrack fillingCracksThis study aimed to analyze the performance of two concrete mixtures with the addition of B. subtilis spores regarding their capacity of filling cracks during the curing time, evaluating whether the addition can influence the compressive strength of the concrete. For so, six concrete mixtures were studied divided in two mix compositions: 1:1:2 and 1:2:3 (cement: sand: gravel) with w/c of 0.33 and 0.45, respectively. For each composition were added concentrations of 0, 0.3x108 or 1.2x108 of B. subtilis spores/mL. The results showed that all the samples with spores addition presented crystals precipitation, possibly calcium carbonate, that visually filled the cracks. However, more studies of microstructural analysis should be conducted to prove that the cracks were closed. The compressive strength presented satisfactory results, because the addition of 1.2x108 spores/mL did not present significant differences in compressive strength at probability level of 5%, when compared to the reference concrete.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)State University of LondrinaFAG UniversityState University of São PauloUniversidade Estadual de Londrina (UEL)FAG UniversityUniversidade de São Paulo (USP)Schwantes-Cezario, NicolePeres, Maria Vânia Nogueira Do NascimentoFruet, Thomas KehrwaldNogueira, Geovana Souza FerreiraToralles, Berenice MartinsCezario, Davi De Souza2022-04-28T19:26:59Z2022-04-28T19:26:59Z2018-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article132-139http://dx.doi.org/10.15446/dyna.v85n205.68591DYNA (Colombia), v. 85, n. 205, p. 132-139, 2018.0012-7353http://hdl.handle.net/11449/22124410.15446/dyna.v85n205.685912-s2.0-85060996487Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengDYNA (Colombia)info:eu-repo/semantics/openAccess2022-04-28T19:26:59Zoai:repositorio.unesp.br:11449/221244Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:23:03.165964Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Crack filling in concrete by addition of bacillus subtilis spores – Preliminary study Relleno de fisuras en concreto por la adición de esporas de Bacilos subtilis - Estudio preliminar |
title |
Crack filling in concrete by addition of bacillus subtilis spores – Preliminary study |
spellingShingle |
Crack filling in concrete by addition of bacillus subtilis spores – Preliminary study Schwantes-Cezario, Nicole Bacillus subtilis Bioconcrete Concrete with addition of spores Crack filling Cracks |
title_short |
Crack filling in concrete by addition of bacillus subtilis spores – Preliminary study |
title_full |
Crack filling in concrete by addition of bacillus subtilis spores – Preliminary study |
title_fullStr |
Crack filling in concrete by addition of bacillus subtilis spores – Preliminary study |
title_full_unstemmed |
Crack filling in concrete by addition of bacillus subtilis spores – Preliminary study |
title_sort |
Crack filling in concrete by addition of bacillus subtilis spores – Preliminary study |
author |
Schwantes-Cezario, Nicole |
author_facet |
Schwantes-Cezario, Nicole Peres, Maria Vânia Nogueira Do Nascimento Fruet, Thomas Kehrwald Nogueira, Geovana Souza Ferreira Toralles, Berenice Martins Cezario, Davi De Souza |
author_role |
author |
author2 |
Peres, Maria Vânia Nogueira Do Nascimento Fruet, Thomas Kehrwald Nogueira, Geovana Souza Ferreira Toralles, Berenice Martins Cezario, Davi De Souza |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Londrina (UEL) FAG University Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Schwantes-Cezario, Nicole Peres, Maria Vânia Nogueira Do Nascimento Fruet, Thomas Kehrwald Nogueira, Geovana Souza Ferreira Toralles, Berenice Martins Cezario, Davi De Souza |
dc.subject.por.fl_str_mv |
Bacillus subtilis Bioconcrete Concrete with addition of spores Crack filling Cracks |
topic |
Bacillus subtilis Bioconcrete Concrete with addition of spores Crack filling Cracks |
description |
This study aimed to analyze the performance of two concrete mixtures with the addition of B. subtilis spores regarding their capacity of filling cracks during the curing time, evaluating whether the addition can influence the compressive strength of the concrete. For so, six concrete mixtures were studied divided in two mix compositions: 1:1:2 and 1:2:3 (cement: sand: gravel) with w/c of 0.33 and 0.45, respectively. For each composition were added concentrations of 0, 0.3x108 or 1.2x108 of B. subtilis spores/mL. The results showed that all the samples with spores addition presented crystals precipitation, possibly calcium carbonate, that visually filled the cracks. However, more studies of microstructural analysis should be conducted to prove that the cracks were closed. The compressive strength presented satisfactory results, because the addition of 1.2x108 spores/mL did not present significant differences in compressive strength at probability level of 5%, when compared to the reference concrete. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-04-01 2022-04-28T19:26:59Z 2022-04-28T19:26:59Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.15446/dyna.v85n205.68591 DYNA (Colombia), v. 85, n. 205, p. 132-139, 2018. 0012-7353 http://hdl.handle.net/11449/221244 10.15446/dyna.v85n205.68591 2-s2.0-85060996487 |
url |
http://dx.doi.org/10.15446/dyna.v85n205.68591 http://hdl.handle.net/11449/221244 |
identifier_str_mv |
DYNA (Colombia), v. 85, n. 205, p. 132-139, 2018. 0012-7353 10.15446/dyna.v85n205.68591 2-s2.0-85060996487 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
DYNA (Colombia) |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
132-139 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128641526136832 |