Investigating the possible usage of elephant grass ash to manufacture the eco-friendly binary cements

In recent years, agro-industrial residues are focusing attention worldwide as a new source of pozzolans; in Brazil one of the wastes generated from agro-industrial activities comes from elephant grass that is cultivated as biomass for energy cogeneration. The goal of this paper is to analyze the inf...

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Detalles Bibliográficos
Autores: Nakanishi, Erika Y., Frías, Moisés, Santos, Sergio F., Rodrigues, Michelle S.
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/135344
Acceso en línea:http://hdl.handle.net/10261/135344
Access Level:acceso abierto
Palabra clave:Elephant grass ash
Pozzolanic activity
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spelling Investigating the possible usage of elephant grass ash to manufacture the eco-friendly binary cementsNakanishi, Erika Y.Frías, MoisésSantos, Sergio F.Rodrigues, Michelle S.Elephant grass ashPozzolanic activityIn recent years, agro-industrial residues are focusing attention worldwide as a new source of pozzolans; in Brazil one of the wastes generated from agro-industrial activities comes from elephant grass that is cultivated as biomass for energy cogeneration. The goal of this paper is to analyze the influence of elephant grass, once activated at 700 C for 1 h in electric furnace, on the evolution of the hydration reaction as well as physical and mechanical properties in blended cement elaborated with 20% of elephant grass ash. For the present study, different instrumental techniques of characterization and methodologies (XRF, XRD, TG/DTG, mercury porosimetry, isothermal calorimetry and mechanical strength) were used. The results obtained in the present work show, that due to its high pozzolanic activity, the elephant grass ash activated at 700 C can be used as an alternative pozzolan in the blended cement manufacture. Additions of 20% of ash confirm the formation of CSH gels and hexagonal C4AH13 as main products from hydration as well as pozzolanic reaction. The 20% ash blended cement showed lower heat evolution than OPC and similar to the 20% silica fume blended cement, a 12% of reduction of compressive strength and an important reduction of pore sizes below 50 nm.Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201620162016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/135344reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.jclepro.2015.12.113Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1353442026-05-22T06:33:51Z
dc.title.none.fl_str_mv Investigating the possible usage of elephant grass ash to manufacture the eco-friendly binary cements
title Investigating the possible usage of elephant grass ash to manufacture the eco-friendly binary cements
spellingShingle Investigating the possible usage of elephant grass ash to manufacture the eco-friendly binary cements
Nakanishi, Erika Y.
Elephant grass ash
Pozzolanic activity
title_short Investigating the possible usage of elephant grass ash to manufacture the eco-friendly binary cements
title_full Investigating the possible usage of elephant grass ash to manufacture the eco-friendly binary cements
title_fullStr Investigating the possible usage of elephant grass ash to manufacture the eco-friendly binary cements
title_full_unstemmed Investigating the possible usage of elephant grass ash to manufacture the eco-friendly binary cements
title_sort Investigating the possible usage of elephant grass ash to manufacture the eco-friendly binary cements
dc.creator.none.fl_str_mv Nakanishi, Erika Y.
Frías, Moisés
Santos, Sergio F.
Rodrigues, Michelle S.
author Nakanishi, Erika Y.
author_facet Nakanishi, Erika Y.
Frías, Moisés
Santos, Sergio F.
Rodrigues, Michelle S.
author_role author
author2 Frías, Moisés
Santos, Sergio F.
Rodrigues, Michelle S.
author2_role author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Elephant grass ash
Pozzolanic activity
topic Elephant grass ash
Pozzolanic activity
description In recent years, agro-industrial residues are focusing attention worldwide as a new source of pozzolans; in Brazil one of the wastes generated from agro-industrial activities comes from elephant grass that is cultivated as biomass for energy cogeneration. The goal of this paper is to analyze the influence of elephant grass, once activated at 700 C for 1 h in electric furnace, on the evolution of the hydration reaction as well as physical and mechanical properties in blended cement elaborated with 20% of elephant grass ash. For the present study, different instrumental techniques of characterization and methodologies (XRF, XRD, TG/DTG, mercury porosimetry, isothermal calorimetry and mechanical strength) were used. The results obtained in the present work show, that due to its high pozzolanic activity, the elephant grass ash activated at 700 C can be used as an alternative pozzolan in the blended cement manufacture. Additions of 20% of ash confirm the formation of CSH gels and hexagonal C4AH13 as main products from hydration as well as pozzolanic reaction. The 20% ash blended cement showed lower heat evolution than OPC and similar to the 20% silica fume blended cement, a 12% of reduction of compressive strength and an important reduction of pore sizes below 50 nm.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/135344
url http://hdl.handle.net/10261/135344
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.jclepro.2015.12.113
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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