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dc.contributor.authorCuesta-Garcia, Ana Maria
dc.contributor.authorGarcía-Aranda, Miguel Ángel 
dc.contributor.authorSantacruz-Cruz, Maria Isabel 
dc.contributor.authorGomez-de-la-Torre, Maria de los Angeles 
dc.contributor.authorZea-Garcia, Jesus D.
dc.date.accessioned2018-10-15T11:11:40Z
dc.date.available2018-10-15T11:11:40Z
dc.date.created2018
dc.date.issued2018-10-15
dc.identifier.urihttps://hdl.handle.net/10630/16612
dc.description.abstractThe study of nanocrystalline phase atomic ordering is intrinsically complicated. The presence of additional crystalline phase(s) exacerbates this challenge. Here, we use the synchrotron pair distribution function (PDF) to characterize the local atomic order of the nanocrystalline phases in ye’elimite-containing pastes. Here, a multi r-range analysis approach has been used, where the 30–50 Å r-range allows determining the crystalline phase contents and the 1.6-35 Å is used to characterize the atomic ordering in the nanocrystalline components. Quantitative phase contents have been also derived from these analyses. Specifically, we have prepared five stoichiometric ye’elimite pastes with variable anhydrite and water contents. For the pastes without anhydrite addition, ettringite was not present and two calcium aluminium monosulfate phases were required for good PDF fits. In addition to crystalline AFm (c =28.6 Å), a nanocrystalline AFm phase with a significantly smaller c-unit cell parameter value, c =26.8 Å, was required having about 60 Å of particle size. For a paste obtained with 31 wt% of anhydrite addition, the main crystalline phase was ettringite with the aluminium hydroxide having nano-gibbsite local structure with a quite small average particle size, =35 Åen_US
dc.description.sponsorshipThis work has been supported by Spanish MINECO through BIA2014-57658-C2 and BIA2017-82391-R, which are co-funded by FEDER. PDF experiment was performed at ID15A beamline of ESRFen_US
dc.language.isoengen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectCristalografíaen_US
dc.subject.otherConcrete technology & manufactureen_US
dc.subject.otherhydrated cementen_US
dc.subject.othercrystallographyen_US
dc.titleSynchrotron Pair Distribution Function analyses of Ye’elimite-based pastesen_US
dc.typeinfo:eu-repo/semantics/conferenceObjecten_US
dc.centroFacultad de Cienciasen_US
dc.identifier.doihttps://doi.org/10.1680/jadcr.18.00097
dc.rights.ccAttribution-NonCommercial-NoDerivatives 4.0 Internacional*


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