Resistance of class C fly ash belite cement to simulated sodium sulphate radioactive liquid waste attack

5 pages.-- Final full-text version of the paper available at: http://dx.doi.org/10.1016/j.jhazmat.2008.04.086.

Detalhes bibliográficos
Autores: Guerrero Bustos, Ana María, Goñi Elizalde, Sara, Rodríguez Allegro, Virginia
Formato: artículo
Fecha de publicación:2008
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/4956
Acesso em linha:http://hdl.handle.net/10261/4956
Access Level:acceso abierto
Palavra-chave:Fly-ash belite cement
Durability
Sulphate waste
Microstructure
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spelling Resistance of class C fly ash belite cement to simulated sodium sulphate radioactive liquid waste attackGuerrero Bustos, Ana MaríaGoñi Elizalde, SaraRodríguez Allegro, VirginiaFly-ash belite cementDurabilitySulphate wasteMicrostructure5 pages.-- Final full-text version of the paper available at: http://dx.doi.org/10.1016/j.jhazmat.2008.04.086.The resistance of class C fly ash belite cement (FABC-2-W)to concentrated sodium sulphate salts associated with low level wastes (LLW) and medium level wastes (MLW) is discussed. This study was carried out according to the Koch and Steinegger methodology by testing the flexural strength of mortars immersed in simulated radioactive liquid waste rich in sulphate (48 000 ppm) and demineralised water (used as a reference), at 20ºC and 40ºC over a period of 180 days. The reaction mechanisms of sulphate ion with the mortar was carried out through a microstructure study, which included the use of Scanning electron microscopy (SEM), porosity and pore-size distribution and X-ray diffraction (XRD). The results showed that the FABC mortar was stable against simulated sulphate radioactive liquid waste (SSRLW) attack at the two chosen temperatures. The enhancement of mechanical properties was a result of the formation of non-expansive ettringite inside the pores and an alkaline activation of the hydraulic activity of cement promoted by the ingress of sulphate. Accordingly, the microstructure was strongly refined.Funding for the present research was provided by the Minister of Science and Technology under Project n◦ MAT 2002-04023-CO3. The authors wish to thank the Thermal Station of Cercs (Catalonia) for the fly ash supplied.Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]200820082008info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501927806 bytesapplication/pdfhttp://hdl.handle.net/10261/4956http://dx.doi.org/10.1016/j.jhazmat.2008.04.086reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/49562026-05-22T06:33:51Z
dc.title.none.fl_str_mv Resistance of class C fly ash belite cement to simulated sodium sulphate radioactive liquid waste attack
title Resistance of class C fly ash belite cement to simulated sodium sulphate radioactive liquid waste attack
spellingShingle Resistance of class C fly ash belite cement to simulated sodium sulphate radioactive liquid waste attack
Guerrero Bustos, Ana María
Fly-ash belite cement
Durability
Sulphate waste
Microstructure
title_short Resistance of class C fly ash belite cement to simulated sodium sulphate radioactive liquid waste attack
title_full Resistance of class C fly ash belite cement to simulated sodium sulphate radioactive liquid waste attack
title_fullStr Resistance of class C fly ash belite cement to simulated sodium sulphate radioactive liquid waste attack
title_full_unstemmed Resistance of class C fly ash belite cement to simulated sodium sulphate radioactive liquid waste attack
title_sort Resistance of class C fly ash belite cement to simulated sodium sulphate radioactive liquid waste attack
dc.creator.none.fl_str_mv Guerrero Bustos, Ana María
Goñi Elizalde, Sara
Rodríguez Allegro, Virginia
author Guerrero Bustos, Ana María
author_facet Guerrero Bustos, Ana María
Goñi Elizalde, Sara
Rodríguez Allegro, Virginia
author_role author
author2 Goñi Elizalde, Sara
Rodríguez Allegro, Virginia
author2_role author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Fly-ash belite cement
Durability
Sulphate waste
Microstructure
topic Fly-ash belite cement
Durability
Sulphate waste
Microstructure
description 5 pages.-- Final full-text version of the paper available at: http://dx.doi.org/10.1016/j.jhazmat.2008.04.086.
publishDate 2008
dc.date.none.fl_str_mv 2008
2008
2008
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/10261/4956
url http://hdl.handle.net/10261/4956
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 927806 bytes
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv http://dx.doi.org/10.1016/j.jhazmat.2008.04.086
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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