Improving the reactivity of a former ground sugarcane bagasse ash produced by autogenous combustion through employment of two different additional grinding procedures

Detalhes bibliográficos
Autor(a) principal: Moraes, J. C.B.
Data de Publicação: 2021
Outros Autores: Cordeiro, G. C., Akasaki, J. L. [UNESP], Vieira, A. P., Payá, J.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.conbuildmat.2020.121471
http://hdl.handle.net/11449/205563
Resumo: Studies on reactivity of sugarcane bagasse ash (SCBA), obtained by an autogenous combustion process, with low loss on ignition and three different particle sizes were carried out (SCBA-1, SCBA-2 and SCBA-3). The ashes were characterized by their particle size distribution, chemical composition, X-ray diffraction (XRD), thermogravimetric analysis (TGA) and field emission scanning electron microscopy (FESEM). The ash with lowest particle size was SCBA-3, followed by SCBA-2, which both were finer than SCBA-1. Calcium hydroxide/SCBA blends were assessed by means of loss of electrical conductivity (Lc), TGA and FESEM. Portland cement/SCBA pastes were analyzed through isothermal calorimetry, TGA, FESEM and compressive strength. Results showed that SCBA with lowest particle size (SCBA-3) presented highest reactivity, which resulted in statically significant better compressive strength than that of control paste (with only Portland cement) after 28 days of curing. The improvement on compressive strength by employing SCBA-3 respect to control and SCBA-1 were 17.9 and 14.1%, respectively, after 180 days of curing.
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spelling Improving the reactivity of a former ground sugarcane bagasse ash produced by autogenous combustion through employment of two different additional grinding proceduresCalcium hydroxide/pozzolan pasteCompressive strength testMicrostructural studyPortland cement/pozzolan pastePozzolan characterizationStudies on reactivity of sugarcane bagasse ash (SCBA), obtained by an autogenous combustion process, with low loss on ignition and three different particle sizes were carried out (SCBA-1, SCBA-2 and SCBA-3). The ashes were characterized by their particle size distribution, chemical composition, X-ray diffraction (XRD), thermogravimetric analysis (TGA) and field emission scanning electron microscopy (FESEM). The ash with lowest particle size was SCBA-3, followed by SCBA-2, which both were finer than SCBA-1. Calcium hydroxide/SCBA blends were assessed by means of loss of electrical conductivity (Lc), TGA and FESEM. Portland cement/SCBA pastes were analyzed through isothermal calorimetry, TGA, FESEM and compressive strength. Results showed that SCBA with lowest particle size (SCBA-3) presented highest reactivity, which resulted in statically significant better compressive strength than that of control paste (with only Portland cement) after 28 days of curing. The improvement on compressive strength by employing SCBA-3 respect to control and SCBA-1 were 17.9 and 14.1%, respectively, after 180 days of curing.Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)Civil Engineering Division Instituto Tecnológico de Aeronáutica (ITA)Laboratory of Civil Engineering Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF)MAC Grupo de Pesquisa em Materiais Alternativos de Construção Faculdade de Engenharia de Ilha Solteira Universidade Estadual Paulista (UNESP)Department of Civil Engineering Universidade Federal do Rio de Janeiro (COPPE/UFRJ)GIQUIMA Group Grupo de Investigación en Química de los Materiales de Construcción ICITECH Instituto de Ciencia y Tecnología del Hormigón Universitat Politècnica de ValènciaMAC Grupo de Pesquisa em Materiais Alternativos de Construção Faculdade de Engenharia de Ilha Solteira Universidade Estadual Paulista (UNESP)Instituto Tecnológico de Aeronáutica (ITA)Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF)Universidade Estadual Paulista (Unesp)Universidade Federal do Rio de Janeiro (UFRJ)Universitat Politècnica de ValènciaMoraes, J. C.B.Cordeiro, G. C.Akasaki, J. L. [UNESP]Vieira, A. P.Payá, J.2021-06-25T10:17:28Z2021-06-25T10:17:28Z2021-02-08info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.conbuildmat.2020.121471Construction and Building Materials, v. 270.0950-0618http://hdl.handle.net/11449/20556310.1016/j.conbuildmat.2020.1214712-s2.0-85097099700Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengConstruction and Building Materialsinfo:eu-repo/semantics/openAccess2021-10-23T14:54:03Zoai:repositorio.unesp.br:11449/205563Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:05:15.834476Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Improving the reactivity of a former ground sugarcane bagasse ash produced by autogenous combustion through employment of two different additional grinding procedures
title Improving the reactivity of a former ground sugarcane bagasse ash produced by autogenous combustion through employment of two different additional grinding procedures
spellingShingle Improving the reactivity of a former ground sugarcane bagasse ash produced by autogenous combustion through employment of two different additional grinding procedures
Moraes, J. C.B.
Calcium hydroxide/pozzolan paste
Compressive strength test
Microstructural study
Portland cement/pozzolan paste
Pozzolan characterization
title_short Improving the reactivity of a former ground sugarcane bagasse ash produced by autogenous combustion through employment of two different additional grinding procedures
title_full Improving the reactivity of a former ground sugarcane bagasse ash produced by autogenous combustion through employment of two different additional grinding procedures
title_fullStr Improving the reactivity of a former ground sugarcane bagasse ash produced by autogenous combustion through employment of two different additional grinding procedures
title_full_unstemmed Improving the reactivity of a former ground sugarcane bagasse ash produced by autogenous combustion through employment of two different additional grinding procedures
title_sort Improving the reactivity of a former ground sugarcane bagasse ash produced by autogenous combustion through employment of two different additional grinding procedures
author Moraes, J. C.B.
author_facet Moraes, J. C.B.
Cordeiro, G. C.
Akasaki, J. L. [UNESP]
Vieira, A. P.
Payá, J.
author_role author
author2 Cordeiro, G. C.
Akasaki, J. L. [UNESP]
Vieira, A. P.
Payá, J.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Instituto Tecnológico de Aeronáutica (ITA)
Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF)
Universidade Estadual Paulista (Unesp)
Universidade Federal do Rio de Janeiro (UFRJ)
Universitat Politècnica de València
dc.contributor.author.fl_str_mv Moraes, J. C.B.
Cordeiro, G. C.
Akasaki, J. L. [UNESP]
Vieira, A. P.
Payá, J.
dc.subject.por.fl_str_mv Calcium hydroxide/pozzolan paste
Compressive strength test
Microstructural study
Portland cement/pozzolan paste
Pozzolan characterization
topic Calcium hydroxide/pozzolan paste
Compressive strength test
Microstructural study
Portland cement/pozzolan paste
Pozzolan characterization
description Studies on reactivity of sugarcane bagasse ash (SCBA), obtained by an autogenous combustion process, with low loss on ignition and three different particle sizes were carried out (SCBA-1, SCBA-2 and SCBA-3). The ashes were characterized by their particle size distribution, chemical composition, X-ray diffraction (XRD), thermogravimetric analysis (TGA) and field emission scanning electron microscopy (FESEM). The ash with lowest particle size was SCBA-3, followed by SCBA-2, which both were finer than SCBA-1. Calcium hydroxide/SCBA blends were assessed by means of loss of electrical conductivity (Lc), TGA and FESEM. Portland cement/SCBA pastes were analyzed through isothermal calorimetry, TGA, FESEM and compressive strength. Results showed that SCBA with lowest particle size (SCBA-3) presented highest reactivity, which resulted in statically significant better compressive strength than that of control paste (with only Portland cement) after 28 days of curing. The improvement on compressive strength by employing SCBA-3 respect to control and SCBA-1 were 17.9 and 14.1%, respectively, after 180 days of curing.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-25T10:17:28Z
2021-06-25T10:17:28Z
2021-02-08
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/10.1016/j.conbuildmat.2020.121471
Construction and Building Materials, v. 270.
0950-0618
http://hdl.handle.net/11449/205563
10.1016/j.conbuildmat.2020.121471
2-s2.0-85097099700
url http://dx.doi.org/10.1016/j.conbuildmat.2020.121471
http://hdl.handle.net/11449/205563
identifier_str_mv Construction and Building Materials, v. 270.
0950-0618
10.1016/j.conbuildmat.2020.121471
2-s2.0-85097099700
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Construction and Building Materials
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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
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