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dc.creatorPerez-Nicolas, M. (María)-
dc.creatorDuran, A. (Adrián)-
dc.creatorNavarro-Blasco, I. (Íñigo)-
dc.creatorFernandez-Alvarez, J.M. (José María)-
dc.creatorSirera, R. (Rafael)-
dc.creatorAlvarez, J.I. (José Ignacio)-
dc.date.accessioned2016-01-21T10:44:19Z-
dc.date.available2016-01-21T10:44:19Z-
dc.date.issued2016-04-01-
dc.identifier.citationPérez-Nicolás M, Duran A, Navarro-Blasco I, Sirera R, Fernández JM, Alvarez JI. Study on the effectiveness of PNS and LS superplasticizers in air lime-based mortars. Cem. Concr. Res. 2016;82:11-22.es_ES
dc.identifier.issn0008-8846-
dc.identifier.urihttp://hdl.handle.net/10171/39772-
dc.description.abstractPolynaphtalenesulfonate (PNS) and lignosulfonate (LS) were tested as superplasticizers in pastes and mortars of pure air lime and air lime with a pozzolanic additive, nanosilica (NS). LS showed a better plasticizing effect than PNS: the flowability of the samples with LS as well as the slump retention over time was larger. LS strongly hindered carbonation due to its ability to form Ca2+ complexes. In mortars with NS, PNS was seen to interfere with the C-S-H formation, resulting in lower mechanical strengths. Adsorption isotherms and zeta potential showed that PNS was more adsorbed than LS onto lime and C-S-H particles. PNS acted mainly through electrostatic repulsion owing to its high anionic charge density and flat adsorption. However, LS was more efficient as superplasticizer in air lime media, steric hindrance being the main mechanism responsible for avoiding flocculation. Furthermore, LS yielded high compressive strengths in mortars with NS.es_ES
dc.description.sponsorshipThis work was funded by Fundación Universitaria de Navarra under grant FUNA2013-15108402 and Fundación Caja Navarra under grant 31-2014. M. Pérez-Nicolás thanks the Friends of the University of Navarra, Inc., for a pre-doctoral grant.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.rightsinfo:eu-repo/semantics/embargoedAccess*
dc.subjectDispersiones_ES
dc.subjectWorkabilityes_ES
dc.subjectAdmixturees_ES
dc.subjectCa(OH)2es_ES
dc.subjectCalcium-Silicate-Hydrate (C-S-H)es_ES
dc.titleStudy on the effectiveness of PNS and LS superplasticizers in air lime-based mortarses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.cemconres.2015.12.006es_ES

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