Modelling of interfacial transition zone effect on resistance to crack propagation in fine-grained cement-based composites

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dc.contributor.authorŠimonová, Hanacs
dc.contributor.authorVyhlídal, Michalcs
dc.contributor.authorKucharczyková, Barbaracs
dc.contributor.authorBayer, Patrikcs
dc.contributor.authorKeršner, Zbyněkcs
dc.contributor.authorMalíková, Luciecs
dc.contributor.authorKlusák, Jancs
dc.coverage.issue41cs
dc.date.accessioned2020-08-04T11:02:11Z
dc.date.available2020-08-04T11:02:11Z
dc.date.issued2017-07-03cs
dc.description.abstractIn this paper, the attention is paid to investigation of the importance of the interfacial transition zone (ITZ) in selected fine-grained cement-based composites for the global fracture behaviour. This is a region of cement paste around the aggregate particles which specific features could have significant impact on the final behaviour of cement composites with a crack tip nearby this interface under applied tension. The aim of this work is to show the basic interface microstructure by scanning electron microscopy (SEM) done by MIRA3 TESCAN and to analyse the behaviour of such composite by numerical modelling. Numerical studies assume two different ITZ thicknesses taken from SEM analysis. A simplified cracked geometry (consisting of three phases – matrix, ITZ, and aggregate) is modelled by means of the finite element method with a crack terminating at the matrix–ITZ interface. ITZ’s modulus of elasticity is taken from generalized self-consistent scheme. A few conclusions are discussed based on comparison of the average values of the opening stress ahead of the crack tip with their critical values. The analyses dealing with the effect of ITZ’s properties on the stress distribution should contribute to better description of toughening mechanisms in silicate-based composites.en
dc.formattextcs
dc.format.extent211-219cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationFrattura ed Integrita Strutturale. 2017, issue 41, p. 211-219.en
dc.identifier.doi10.3221/IGF-ESIS.41.29cs
dc.identifier.issn1971-8993cs
dc.identifier.other137641cs
dc.identifier.urihttp://hdl.handle.net/11012/69319
dc.language.isoencs
dc.publisherItalian Group of Fracturecs
dc.relation.ispartofFrattura ed Integrita Strutturalecs
dc.relation.urihttp://www.gruppofrattura.it/pdf/rivista/numero41/numero_41_art_29.pdfcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1971-8993/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectFine-grained concreteen
dc.subjectInterfacial transition zoneen
dc.subjectScanning electron microscopyen
dc.subjectThree-point bending fracture testen
dc.subjectEffective fracture toughnessen
dc.titleModelling of interfacial transition zone effect on resistance to crack propagation in fine-grained cement-based compositesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-137641en
sync.item.dbtypeVAVen
sync.item.insts2020.08.04 13:02:11en
sync.item.modts2020.08.04 12:28:42en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav stavební mechanikycs
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav stavebního zkušebnictvícs
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav chemiecs
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