Improving the reactivity of a former ground sugarcane bagasse ash produced by autogenous combustion through employment of two different additional grinding procedures
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
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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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 |
|
_version_ |
1808129017820217344 |