Evaluation of the Surfactant Leaching from Alkali-Activated Slag-Based Composites Using Surface-Tension Measurements

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dc.contributor.authorBílek, Vlastimilcs
dc.contributor.authorKalina, Lukášcs
dc.contributor.authorBartoníčková, Evacs
dc.contributor.authorPořízka, Jaromírcs
dc.coverage.issue1cs
dc.coverage.volume53cs
dc.date.accessioned2020-08-04T10:59:20Z
dc.date.available2020-08-04T10:59:20Z
dc.date.issued2019-02-01cs
dc.description.abstractThis work tries to evaluatethe amount of surfactant leached from the AAS-based mortars using a very simple surface-tension (ST) measuring technique.Mortars based on AAS with and without2%ofPEGvarying in molecular weight (MW) were prepared. Waterglass with aSiO2-to-Na2O ratio equal to 2.0 was used at a dose corresponding to8%Na2O with respect to the slag weight. Mortarspecimens were prepared and sealed for 24 h, 3 d and 7 d. Then they were demolded and immersed in demineralized water,whose ST was monitored over time. During the early stages (from minutes to a few hours) the ST dropped rapidly, while itremained approximately constant after a few days, which indicates that organic molecules are leached from the AAS specimensvery quickly. It was observed that a relatively small fraction of PEGs can be leached out, which indicates that organic moleculesare rather bound in the matrix, unable to reduce the ST of the pore solution.en
dc.formattextcs
dc.format.extent33-38cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMateriali in tehnologije. 2019, vol. 53, issue 1, p. 33-38.en
dc.identifier.doi10.17222/mit.2018.148cs
dc.identifier.issn1580-2949cs
dc.identifier.other155606cs
dc.identifier.urihttp://hdl.handle.net/11012/137966
dc.language.isoencs
dc.publisherInstitute of Metals and Technologycs
dc.relation.ispartofMateriali in tehnologijecs
dc.relation.urihttp://mit.imt.si/Revija/izvodi/mit191/bilek.pdfcs
dc.rights(C) Institute of Metals and Technologycs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1580-2949/cs
dc.subjectAlkali-activated slagen
dc.subjectpolyethylene glycolen
dc.subjectleachingen
dc.subjectsurface tensionen
dc.titleEvaluation of the Surfactant Leaching from Alkali-Activated Slag-Based Composites Using Surface-Tension Measurementsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-155606en
sync.item.dbtypeVAVen
sync.item.insts2020.08.04 12:59:20en
sync.item.modts2020.08.04 12:36:04en
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. CMV - laboratoř anorganických materiálůcs
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