Spatially resolved in situ analyses of the adsorption behavior of different admixtures on binders

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dc.date.accessioned2024-01-10T09:15:53Z
dc.date.available2024-01-10T09:15:53Z
dc.date.issued2023-12-06
dc.description.sponsorshipGefördert im Rahmen des Projekts DEAL
dc.identifierdoi:10.17170/kobra-202401109346
dc.identifier.urihttp://hdl.handle.net/123456789/15358
dc.language.isoeng
dc.relation.doidoi:10.1002/cepa.2798
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectsuperplasticizerseng
dc.subjectconfocal laser scanning microscopyeng
dc.subjectlignosulfonateeng
dc.subjectpolycarboxylate ethereng
dc.subjectfluorescence microscopyeng
dc.subjectadsorptioneng
dc.subject.ddc600
dc.subject.ddc660
dc.subject.swdAdsorptionger
dc.subject.swdBetonverflüssigerger
dc.subject.swdLigninger
dc.subject.swdEtherger
dc.subject.swdPolycarboxylateger
dc.subject.swdFluoreszenzmikroskopieger
dc.titleSpatially resolved in situ analyses of the adsorption behavior of different admixtures on binderseng
dc.typeAufsatz
dc.type.versionpublishedVersion
dcterms.abstractAdmixtures play a key role in improving the performance of the cement paste matrix. A more efficient matrix can allow a reduction the binder content while maintaining the same properties. There is currently a lack of knowledge about the spatial distribution of admixtures in situ on binder surfaces which would facilitate the use of admixtures in general in inorganic binder systems. Imaging techniques such as confocal laser scanning microscopy (CLSM) and fluorescence microscopy can be used to study the spatiotemporal adsorption of superplasticizers and plasticizers on binder particles. However, in order to make the admixtures visible using these methods, they must first be coupled to a fluorescent molecule (staining). Different types of superplasticizers and plasticizers, including polycarboxylate ethers (PCE) and lignosulfonate (LS) were stained and tested. It was shown that not only adsorption but also desorption can be observed and that desorption cannot play a relevant role in a binder system. The absence of desorption could be used to observe a real system in permanent preparations, so that the adsorption on individual cement grains could be followed in a time-dependent manner. The newly developed method provides unprecedented insight into the adsorption of additives.eng
dcterms.accessRightsopen access
dcterms.creatorKosenko, Denis
dcterms.creatorWetzel, Alexander
dcterms.creatorMiddendorf, Bernhard
dcterms.source.articlenumber2798
dcterms.source.identifiereissn:2509-7075
dcterms.source.issueIssue 6
dcterms.source.journalce/paperseng
dcterms.source.pageinfo477-483
dcterms.source.volumeVolume 6
kup.iskupfalse

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