Assessment of sugar cane straw ash (SCSA) as pozzolanic material in blended Portland cement: Microstructural characterization of pastes and mechanical strength of mortars

Detalhes bibliográficos
Autor(a) principal: Moraes, J. C.B. [UNESP]
Data de Publicação: 2015
Outros Autores: Akasaki, J. L. [UNESP], Melges, J. L.P. [UNESP], Monzó, J., Borrachero, M. V., Soriano, L., Payá, J., Tashima, M. M. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.conbuildmat.2015.07.108
http://hdl.handle.net/11449/167916
Resumo: Abstract The aim of this paper is to assess the pozzolanic reactivity of sugar cane straw ash (SCSA) obtained through an auto-combustion process and the mechanical properties of SCSA-containing systems. Characterization of SCSA (X-ray diffraction, chemical composition, particle size, and microscopy) and reactivity studies on hydrated lime/SCSA and Portland cement/SCSA pastes through infrared spectroscopy, thermogravimetric analysis, and microscopy demonstrated the high pozzolanic activity. This reactivity made it possible to achieve good mechanical properties in mortars in which 15-30% of the cement was replaced by SCSA. After 90 days of curing, the SCSA fixed 100% of the lime present in lime/SCSA pastes, and the compressive strength of mortars containing SCSA reached 44 MPa, a value similar to those found for control mortars after the same number of curing days. The results for the microstructural and mechanical properties showed that SCSA is a good pozzolanic material.
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spelling Assessment of sugar cane straw ash (SCSA) as pozzolanic material in blended Portland cement: Microstructural characterization of pastes and mechanical strength of mortarsAuto-combustionCement pasteLime pasteMechanical propertiesMicrostructural characterizationMortarPortland cementPozzolanic reactivitySugar cane straw ashAbstract The aim of this paper is to assess the pozzolanic reactivity of sugar cane straw ash (SCSA) obtained through an auto-combustion process and the mechanical properties of SCSA-containing systems. Characterization of SCSA (X-ray diffraction, chemical composition, particle size, and microscopy) and reactivity studies on hydrated lime/SCSA and Portland cement/SCSA pastes through infrared spectroscopy, thermogravimetric analysis, and microscopy demonstrated the high pozzolanic activity. This reactivity made it possible to achieve good mechanical properties in mortars in which 15-30% of the cement was replaced by SCSA. After 90 days of curing, the SCSA fixed 100% of the lime present in lime/SCSA pastes, and the compressive strength of mortars containing SCSA reached 44 MPa, a value similar to those found for control mortars after the same number of curing days. The results for the microstructural and mechanical properties showed that SCSA is a good pozzolanic material.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Ministerio de Educación, Cultura y DeporteUNESP - Univ Estadual Paulista, Campus de Ilha SolteiraICITECH - Instituto de Ciencia y Tecnología del Hormigón, Universitat Politècnica de ValènciaUNESP - Univ Estadual Paulista, Campus de Ilha SolteiraCNPq: 401724/2013-1Ministerio de Educación, Cultura y Deporte: PHB-2011-0016-PCUniversidade Estadual Paulista (Unesp)ICITECH - Instituto de Ciencia y Tecnología del Hormigón, Universitat Politècnica de ValènciaMoraes, J. C.B. [UNESP]Akasaki, J. L. [UNESP]Melges, J. L.P. [UNESP]Monzó, J.Borrachero, M. V.Soriano, L.Payá, J.Tashima, M. M. [UNESP]2018-12-11T16:38:51Z2018-12-11T16:38:51Z2015-07-21info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article670-677application/pdfhttp://dx.doi.org/10.1016/j.conbuildmat.2015.07.108Construction and Building Materials, v. 94, p. 670-677.0950-0618http://hdl.handle.net/11449/16791610.1016/j.conbuildmat.2015.07.1082-s2.0-849375620072-s2.0-84937562007.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengConstruction and Building Materials1,607info:eu-repo/semantics/openAccess2023-11-27T06:11:30Zoai:repositorio.unesp.br:11449/167916Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:50:06.080869Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Assessment of sugar cane straw ash (SCSA) as pozzolanic material in blended Portland cement: Microstructural characterization of pastes and mechanical strength of mortars
title Assessment of sugar cane straw ash (SCSA) as pozzolanic material in blended Portland cement: Microstructural characterization of pastes and mechanical strength of mortars
spellingShingle Assessment of sugar cane straw ash (SCSA) as pozzolanic material in blended Portland cement: Microstructural characterization of pastes and mechanical strength of mortars
Moraes, J. C.B. [UNESP]
Auto-combustion
Cement paste
Lime paste
Mechanical properties
Microstructural characterization
Mortar
Portland cement
Pozzolanic reactivity
Sugar cane straw ash
title_short Assessment of sugar cane straw ash (SCSA) as pozzolanic material in blended Portland cement: Microstructural characterization of pastes and mechanical strength of mortars
title_full Assessment of sugar cane straw ash (SCSA) as pozzolanic material in blended Portland cement: Microstructural characterization of pastes and mechanical strength of mortars
title_fullStr Assessment of sugar cane straw ash (SCSA) as pozzolanic material in blended Portland cement: Microstructural characterization of pastes and mechanical strength of mortars
title_full_unstemmed Assessment of sugar cane straw ash (SCSA) as pozzolanic material in blended Portland cement: Microstructural characterization of pastes and mechanical strength of mortars
title_sort Assessment of sugar cane straw ash (SCSA) as pozzolanic material in blended Portland cement: Microstructural characterization of pastes and mechanical strength of mortars
author Moraes, J. C.B. [UNESP]
author_facet Moraes, J. C.B. [UNESP]
Akasaki, J. L. [UNESP]
Melges, J. L.P. [UNESP]
Monzó, J.
Borrachero, M. V.
Soriano, L.
Payá, J.
Tashima, M. M. [UNESP]
author_role author
author2 Akasaki, J. L. [UNESP]
Melges, J. L.P. [UNESP]
Monzó, J.
Borrachero, M. V.
Soriano, L.
Payá, J.
Tashima, M. M. [UNESP]
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
ICITECH - Instituto de Ciencia y Tecnología del Hormigón, Universitat Politècnica de València
dc.contributor.author.fl_str_mv Moraes, J. C.B. [UNESP]
Akasaki, J. L. [UNESP]
Melges, J. L.P. [UNESP]
Monzó, J.
Borrachero, M. V.
Soriano, L.
Payá, J.
Tashima, M. M. [UNESP]
dc.subject.por.fl_str_mv Auto-combustion
Cement paste
Lime paste
Mechanical properties
Microstructural characterization
Mortar
Portland cement
Pozzolanic reactivity
Sugar cane straw ash
topic Auto-combustion
Cement paste
Lime paste
Mechanical properties
Microstructural characterization
Mortar
Portland cement
Pozzolanic reactivity
Sugar cane straw ash
description Abstract The aim of this paper is to assess the pozzolanic reactivity of sugar cane straw ash (SCSA) obtained through an auto-combustion process and the mechanical properties of SCSA-containing systems. Characterization of SCSA (X-ray diffraction, chemical composition, particle size, and microscopy) and reactivity studies on hydrated lime/SCSA and Portland cement/SCSA pastes through infrared spectroscopy, thermogravimetric analysis, and microscopy demonstrated the high pozzolanic activity. This reactivity made it possible to achieve good mechanical properties in mortars in which 15-30% of the cement was replaced by SCSA. After 90 days of curing, the SCSA fixed 100% of the lime present in lime/SCSA pastes, and the compressive strength of mortars containing SCSA reached 44 MPa, a value similar to those found for control mortars after the same number of curing days. The results for the microstructural and mechanical properties showed that SCSA is a good pozzolanic material.
publishDate 2015
dc.date.none.fl_str_mv 2015-07-21
2018-12-11T16:38:51Z
2018-12-11T16:38:51Z
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.2015.07.108
Construction and Building Materials, v. 94, p. 670-677.
0950-0618
http://hdl.handle.net/11449/167916
10.1016/j.conbuildmat.2015.07.108
2-s2.0-84937562007
2-s2.0-84937562007.pdf
url http://dx.doi.org/10.1016/j.conbuildmat.2015.07.108
http://hdl.handle.net/11449/167916
identifier_str_mv Construction and Building Materials, v. 94, p. 670-677.
0950-0618
10.1016/j.conbuildmat.2015.07.108
2-s2.0-84937562007
2-s2.0-84937562007.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Construction and Building Materials
1,607
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 670-677
application/pdf
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_ 1808128987460796416

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