Mechanical fracture parameters of concrete drill-core specimens supported by a slenderness ratio study

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dc.contributor.authorLisztwan, Dominikcs
dc.contributor.authorKumpová, Ivanacs
dc.contributor.authorDaněk, Petrcs
dc.contributor.authorFrantík, Petrcs
dc.contributor.authorKeršner, Zbyněkcs
dc.coverage.volume1209cs
dc.date.accessioned2022-01-11T15:55:47Z
dc.date.available2022-01-11T15:55:47Z
dc.date.issued2021-12-21cs
dc.description.abstractThe detailed analytical and experimental investigation of the fracture behaviour of quasi-brittle materials is an endeavour which has been ongoing worldwide for many years. Such materials are usually characterized in terms of their mechanical fracture parameters, which are determined based on the evaluation of quasi-static fracture experiments. One of the most commonly used building materials with a quasi-brittle response is concrete, which is most often based on a cement matrix. It is sometimes also necessary to characterize concrete included in existing structures. In this case, test specimens are obtained by core drilling, and the investigation is conducted with the requirement to maximize the number of parameters obtained while minimizing the number of test specimens drilled from the structure. This paper focuses on the mechanical fracture parameters of core-drilled specimens taken from a selected concrete structure. Tests were performed on cylindrical specimens with a chevron-notched stress concentrator in the three-point bending configuration in order to determine modulus of elasticity, fracture toughness and fracture energy. Subsequently, theoretical compressive strength was estimated and tests for the determination of compressive strength values were performed focusing on dependence on the slenderness ratio, i.e. the relationship between the compressive strength and the length to diameter ratio of the cylindrical specimens. In relation to the obtained mechanical fracture parameters, selected specimens were analysed and three-dimensionally characterized via high-resolution X-ray computed tomography.en
dc.formattextcs
dc.format.extent1-16cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationIOP Conference Series: Materials Science and Engineering. 2021, vol. 1209, p. 1-16.en
dc.identifier.doi10.1088/1757-899X/1209/1/012042cs
dc.identifier.issn1757-899Xcs
dc.identifier.other175574cs
dc.identifier.urihttp://hdl.handle.net/11012/203291
dc.language.isoencs
dc.publisherIOP Publishing Ltdcs
dc.relation.ispartofIOP Conference Series: Materials Science and Engineeringcs
dc.relation.urihttps://iopscience.iop.org/issue/1757-899X/1209/1cs
dc.rightsCreative Commons Attribution 3.0 Unportedcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1757-899X/cs
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/cs
dc.subjectconcrete drill-coreen
dc.subjectfracture parametersen
dc.subjectcompressive strengthen
dc.subjectslenderness ratioen
dc.subjectX-ray computed tomographyen
dc.titleMechanical fracture parameters of concrete drill-core specimens supported by a slenderness ratio studyen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-175574en
sync.item.dbtypeVAVen
sync.item.insts2023.02.21 12:53:13en
sync.item.modts2023.02.21 12:14:32en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav stavebního zkušebnictvícs
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav stavební mechanikycs
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