Internal prestressing of ultra-high performance concrete using shape memory fibers

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dc.date.accessioned2023-07-31T14:38:37Z
dc.date.available2023-07-31T14:38:37Z
dc.date.issued2023-05-31
dc.description.sponsorshipGefördert im Rahmen des Projekts DEALger
dc.identifierdoi:10.17170/kobra-202307218442
dc.identifier.urihttp://hdl.handle.net/123456789/14955
dc.language.isoeng
dc.relation.doidoi:10.1002/pamm.202200253
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subject.ddc660
dc.subject.swdMemory-Legierungger
dc.subject.swdFaserger
dc.subject.swdBetonger
dc.subject.swdVorspannungger
dc.subject.swdFinite-Elemente-Methodeger
dc.titleInternal prestressing of ultra-high performance concrete using shape memory fiberseng
dc.typeAufsatz
dc.type.versionpublishedVersion
dcterms.abstractUsing shape memory fibers to reinforce concrete is a novel concept in civil engineering. Pre-stretched fibers are brought into concrete and after activating the shape memory effect, a compressive prestress state is introduced. The present work investigates this method numerically. A brief introduction to the relevant behavior of shape memory alloys is given. Fiber activation is modeled by an empirical phase transition model. Simulations are carried out by applying the Finite Element Method to solve the CAUCHY-FOURIER equations. Results of studies are presented for single-fiber, improved single-fiber and multi-fiber configurations. Special focus is put on the geometric type of strain release. Key findings are that compressive stresses can be introduced into the concrete, however, local tension will occur. By altering the fiber geometry and applying an elastomeric coating, these regions can be eliminated. Furthermore, when using multiple fibers, there are synergies between regions of compression.eng
dcterms.accessRightsopen access
dcterms.creatorDescher, Stefan
dcterms.creatorKrooß, Philipp
dcterms.creatorKuhl, Detlef
dcterms.creatorWetzel, Alexander
dcterms.creatorWolf, Sebastian
dcterms.source.articlenumbere202200253
dcterms.source.identifiereissn:1617-7061
dcterms.source.issueIssue 1
dcterms.source.journalProceedings in Applied Mathematics and Mechanics (PAMM)eng
dcterms.source.volumeVolume 23
kup.iskupfalse

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