Structural characterization of C-S-H gel through an improved deconvolution analysis of NMR spectra

The structure of the C-S-H gel in hydrated cement samples prepared with and without the addition of silica nanoparticles is studied in this work through the deconvolution of 29Si MAS-NMR spectra. X-ray diffraction and energy dispersive X-ray microanalysis are also considered for the analysis. A meth...

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Authors: Pérez Álvarez-Quiñones, Gloria, Guerrero Bustos, Ana María, Gaitero, Juan J., Goñi Elizalde, Sara
Format: article
Status:Versión aceptada para publicación
Publication Date:2014
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/216155
Online Access:http://hdl.handle.net/10261/216155
Access Level:Open access
Keyword:Deconvolution
Nuclear Magnetic Resonance Spectrum
Silica Nanoparticles
Spectral Curve
Calcium silicate hydrate
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spelling Structural characterization of C-S-H gel through an improved deconvolution analysis of NMR spectraPérez Álvarez-Quiñones, GloriaGuerrero Bustos, Ana MaríaGaitero, Juan J.Goñi Elizalde, SaraDeconvolutionNuclear Magnetic Resonance SpectrumSilica NanoparticlesSpectral CurveCalcium silicate hydrateThe structure of the C-S-H gel in hydrated cement samples prepared with and without the addition of silica nanoparticles is studied in this work through the deconvolution of 29Si MAS-NMR spectra. X-ray diffraction and energy dispersive X-ray microanalysis are also considered for the analysis. A method with improved sensitivity and reliability is proposed for the deconvolution of the spectra into elementary components involving a good fitting of both the spectral curve and its second derivative. The increased sensitivity of the deconvolution proves to be especially interesting for the characterization of low concentration components in the NMR spectra, and the high reliability allows properly defining the effect of nanosilica addition on the C-S-H gel nanostructure. In fact, the addition of nanosilica is found to produce a pozzolanic reaction that results in an increase of the mean silicate chain length and an enhancement of the aluminum incorporation into the C-S-H gel phase.The authors would like to acknowledge the Service Unit of IETcc-CSIC for the XRD and SEM–EDX data and gratefully acknowledge the financial support of the Project BIA2011-29234-C02-01.Peer reviewedSpringer NatureMinisterio de Ciencia e Innovación (España)Pérez Álvarez-Quiñones, Gloria [0000-0001-9268-5964]Guerrero Bustos, Ana María [0000-0002-4130-1032]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202020202014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/216155reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MICINN//BIA2011-29234-C02-01https://doi.org/10.1007/s10853-013-7688-8Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2161552026-05-22T06:33:51Z
dc.title.none.fl_str_mv Structural characterization of C-S-H gel through an improved deconvolution analysis of NMR spectra
title Structural characterization of C-S-H gel through an improved deconvolution analysis of NMR spectra
spellingShingle Structural characterization of C-S-H gel through an improved deconvolution analysis of NMR spectra
Pérez Álvarez-Quiñones, Gloria
Deconvolution
Nuclear Magnetic Resonance Spectrum
Silica Nanoparticles
Spectral Curve
Calcium silicate hydrate
title_short Structural characterization of C-S-H gel through an improved deconvolution analysis of NMR spectra
title_full Structural characterization of C-S-H gel through an improved deconvolution analysis of NMR spectra
title_fullStr Structural characterization of C-S-H gel through an improved deconvolution analysis of NMR spectra
title_full_unstemmed Structural characterization of C-S-H gel through an improved deconvolution analysis of NMR spectra
title_sort Structural characterization of C-S-H gel through an improved deconvolution analysis of NMR spectra
dc.creator.none.fl_str_mv Pérez Álvarez-Quiñones, Gloria
Guerrero Bustos, Ana María
Gaitero, Juan J.
Goñi Elizalde, Sara
author Pérez Álvarez-Quiñones, Gloria
author_facet Pérez Álvarez-Quiñones, Gloria
Guerrero Bustos, Ana María
Gaitero, Juan J.
Goñi Elizalde, Sara
author_role author
author2 Guerrero Bustos, Ana María
Gaitero, Juan J.
Goñi Elizalde, Sara
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Pérez Álvarez-Quiñones, Gloria [0000-0001-9268-5964]
Guerrero Bustos, Ana María [0000-0002-4130-1032]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Deconvolution
Nuclear Magnetic Resonance Spectrum
Silica Nanoparticles
Spectral Curve
Calcium silicate hydrate
topic Deconvolution
Nuclear Magnetic Resonance Spectrum
Silica Nanoparticles
Spectral Curve
Calcium silicate hydrate
description The structure of the C-S-H gel in hydrated cement samples prepared with and without the addition of silica nanoparticles is studied in this work through the deconvolution of 29Si MAS-NMR spectra. X-ray diffraction and energy dispersive X-ray microanalysis are also considered for the analysis. A method with improved sensitivity and reliability is proposed for the deconvolution of the spectra into elementary components involving a good fitting of both the spectral curve and its second derivative. The increased sensitivity of the deconvolution proves to be especially interesting for the characterization of low concentration components in the NMR spectra, and the high reliability allows properly defining the effect of nanosilica addition on the C-S-H gel nanostructure. In fact, the addition of nanosilica is found to produce a pozzolanic reaction that results in an increase of the mean silicate chain length and an enhancement of the aluminum incorporation into the C-S-H gel phase.
publishDate 2014
dc.date.none.fl_str_mv 2014
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/216155
url http://hdl.handle.net/10261/216155
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MICINN//BIA2011-29234-C02-01
https://doi.org/10.1007/s10853-013-7688-8
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv 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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