Full metadata record
DC FieldValueLanguage
dc.creatorAlvarez-Galindo, J. I. (José Ignacio)-
dc.creatorSirera-Bejarano, R. (Rafael)-
dc.creatorDuran-Benito, A. (Adrian)-
dc.creatorFernandez-Alvarez, J.M. (José María)-
dc.creatorPerez-Nicolas, M. (María)-
dc.creatorNavarro-Blasco, I. (Iñigo)-
dc.date.accessioned2014-10-13T07:37:39Z-
dc.date.available2014-10-13T07:37:39Z-
dc.date.issued2014-12-30-
dc.identifier.citationNavarro-Blasco I, Perez-Nicolas M, Fernandez JM, Duran A, Sirera R, Alvarez JI. Assessment of the interaction of polycarboxylate superplasticizers in hydrated lime pastes modified with nanosilica or metakaolin as pozzolanic reactives. Constr Build Mater 2014;73:1-12.es_ES
dc.identifier.issn0950-0618-
dc.identifier.urihttp://hdl.handle.net/10171/36832-
dc.description.abstractTwo polycarboxylate ether copolymers were assessed as superplasticizers (SPs) for hydrated lime pastes modified with two reactive compounds, nanosilica (NS) and ceramic metakaolin (MK). Characterization of the molecular structure of the SPs by Size Exclusion Chromatography, XRD, FTIR and MALDI-TOF (Matrix Assisted Laser Desorption Ionization Time-of-Flight) mass spectrometry was performed. The structures of the polymers were seen to be star- and worm-like shapes. A close relationship was found between the molecular architecture and the flowability of the pastes, being the star-shaped plasticizer the most efficient. Zeta potential assessment allowed us to elucidate a steric hindrance as the main action mechanism for these polymers. The large specific surface area of nanosilica led to a large SPs consumption as compared with metakaolin with lower surface area. However, SPs in MK-lime samples were attached favourably on the C-S-H and aluminate hydrates, so that the dispersing action was greater with respect to NS-lime suspensions.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relationThis work was fully funded by Fundación Universitaria de Navarra under grant FUNA2013-15108402. We are also grateful to LURESA for providing complementary funding under grant LUR-2010-
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.subjectMetakaolines_ES
dc.subjectNanosilicaes_ES
dc.subjectZeta potentiales_ES
dc.subjectAir lime mortares_ES
dc.subjectPozzolanes_ES
dc.subjectAdmixturees_ES
dc.subjectPolycarboxylatees_ES
dc.subjectFlowabilityes_ES
dc.titleAssessment of the interaction of polycarboxylate superplasticizers in hydrated lime pastes modified with nanosilica or metakaolin as pozzolanic reactiveses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.conbuildmat.2014.09.052es_ES

Files in This Item:
File: 
2014-12-30-CONSBUILDMAT.pdf
Description: 
Size: 
2,4 MB
Format: 
Adobe PDF


Items in Dadun are protected by copyright, with all rights reserved, unless otherwise indicated.