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Bonding Behaviour of Steel Fibres in UHPFRC Based on Alkali-Activated Slag

dc.date.accessioned2022-04-26T12:00:24Z
dc.date.available2022-04-26T12:00:24Z
dc.date.issued2022-03-04
dc.identifierdoi:10.17170/kobra-202204206053
dc.identifier.urihttp://hdl.handle.net/123456789/13788
dc.description.sponsorshipGefördert durch den Publikationsfonds der Universität Kasselger
dc.language.isoengeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectultra-high-performance concreteeng
dc.subjectfibre pullouteng
dc.subjectsilica fumeeng
dc.subjectpotassium waterglasseng
dc.subjectfibre reinforcementeng
dc.subject.ddc660
dc.titleBonding Behaviour of Steel Fibres in UHPFRC Based on Alkali-Activated Slageng
dc.typeAufsatz
dcterms.abstractThe mechanical performance of fibre-reinforced ultra-high-performance concrete based on alkali-activated slag was investigated, concentrating on the use of steel fibres. The flexural strength is slightly higher compared to the UHPC based on Ordinary Portland Cement (OPC) as the binder. Correlating the flexural strength test with multiple fibre-pullout tests, an increase in the bonding behaviour at the interfacial-transition zone of the AAM-UHPC was found compared to the OPC-UHPC. Microstructural investigations on the fibres after storage in an artificial pore solution and a potassium waterglass indicated a dissolution of the metallic surface. This occurred more strongly with the potassium waterglass, which was used as an activator solution in the case of the AAM-UHPC. From this, it can be assumed that the stronger bond results from this initial etching for steel fibres in the AAM-UHPC compared to the OPC-UHPC. The difference in the bond strength of both fibre types, the brass-coated steel fibres and the stainless-steel fibres, was rather low for the AAM-UHPC compared to the OPC-UHPC.eng
dcterms.accessRightsopen access
dcterms.creatorWetzel, Alexander
dcterms.creatorGöbel, Daniela
dcterms.creatorSchleiting, Maximilian
dcterms.creatorWiemer, Niels
dcterms.creatorMiddendorf, Bernhard
dc.relation.doidoi:10.3390/ma15051930
dc.subject.swdUltrahochfester Betonger
dc.subject.swdStahlfaserger
dc.subject.swdWasserglasger
dc.subject.swdKalisalzeger
dc.subject.swdFaserverstärkungger
dc.subject.swdVerbundverhaltenger
dc.type.versionpublishedVersion
dcterms.source.identifiereissn:1996-1944
dcterms.source.issueIssue 5
dcterms.source.journalMaterialseng
dcterms.source.volumeVolume 15
kup.iskupfalse
dcterms.source.articlenumber1930


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