A model for the C-A-S-H gel formed in alkali-activated slag cements

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dc.contributor.authorPuertas, F.
dc.contributor.authorPalacios, M.
dc.contributor.authorManzano, H.
dc.contributor.authorDolado, J. S.
dc.contributor.authorRico, A.
dc.contributor.authorRodríguez, J.
dc.contributor.institutionTecnalia Research & Innovation
dc.date.accessioned2024-07-24T12:02:05Z
dc.date.available2024-07-24T12:02:05Z
dc.date.issued2011-10-15
dc.description.abstractFor first time, an experimental and computational study has been conducted to define a structural model for the C-A-S-H gel forming in alkali-activated slag (AAS) pastes that would account for the mechanical properties of these materials. The study involved a comparison with the C-S-H gel forming in a Portland cement paste. The structure of the C-A-S-H gels in AAS pastes depends on the nature of the alkali activator. When the activator is a NaOH, the structure of the C-S-H gel falls in between tobermorite 1.4. nm with a mean chain length of five, and tobermorite 1.1. nm with a mean length of 14. When waterglass is the activator the structure of the C-A-S-H gel is indicative of the co-existence of tobermorite 1.4. nm with a chain length of 11 and tobermorite 1.1. nm with a chain length of 14. This very densely packed structure gives rise to excellent mechanical properties.en
dc.description.sponsorshipThis research was funded by the European Union under contract NMP3-SL-2008-214030 and the Spanish Ministry of Science and Innovation under project BIA2007-61380. M. Palacios participated under a postdoctoral contract awarded by the Spanish National Research Council. H. Manzano acknowledges the grant received from the Basque Government through the “Improvement of Research Staff” program of the Education, University and Research Department.
dc.description.statusPeer reviewed
dc.format.extent14
dc.identifier.citationPuertas , F , Palacios , M , Manzano , H , Dolado , J S , Rico , A & Rodríguez , J 2011 , ' A model for the C-A-S-H gel formed in alkali-activated slag cements ' , Journal of the European Ceramic Society , vol. 31 , no. 12 , pp. 2043-2056 . https://doi.org/10.1016/j.jeurceramsoc.2011.04.036
dc.identifier.doi10.1016/j.jeurceramsoc.2011.04.036
dc.identifier.issn0955-2219
dc.identifier.urihttps://hdl.handle.net/11556/3216
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=79959240838&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofJournal of the European Ceramic Society
dc.relation.projectIDEuropean Commission, EC, NMP3-SL-2008-214030
dc.relation.projectIDEusko Jaurlaritza
dc.relation.projectIDConsejo Superior de Investigaciones Científicas, CSIC
dc.relation.projectIDMinisterio de Ciencia e Innovación, MICINN, BIA2007-61380
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsAtomistic modelling
dc.subject.keywordsCements
dc.subject.keywordsMechanical properties
dc.subject.keywordsMicrostructure-final
dc.subject.keywordsSpectroscopy
dc.subject.keywordsCeramics and Composites
dc.subject.keywordsMaterials Chemistry
dc.titleA model for the C-A-S-H gel formed in alkali-activated slag cementsen
dc.typejournal article
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