Characteristic Curve and Its Use in Determining the Compressive Strength of Concrete by the Rebound Hammer Test

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dc.contributor.authorKocáb, Daliborcs
dc.contributor.authorMisák, Petrcs
dc.contributor.authorCikrle, Petrcs
dc.coverage.issue17cs
dc.coverage.volume12cs
dc.date.issued2019-08-23cs
dc.description.abstractDuring the construction of concrete structures, it is often useful to know compressive strength at an early age. This is an amount of strength required for the safe removal of formwork, also known as stripping strength. It is certainly helpful to determine this strength non-destructively, i.e., without any invasive steps that would damage the structure. Second only to the ultrasonic pulse velocity test, the rebound hammer test is the most common NDT method currently used for this purpose. However, estimating compressive strength using general regression models can often yield inaccurate results. The experiment results show that the compressive strength of any concrete can be estimated using one’s own newly created regression model. A traditionally constructed regression model can predict the strength value with 50% reliability, or when two-sided confidence bands are used, with 95% reliability. However, civil engineers usually work with the so-called characteristic value defined as a 5% quantile. Therefore, it appears suitable to adjust conventional methods in order to achieve a regression model with 95% one-sided reliability. This paper describes a simple construction of such a characteristic curve. The results show that the characteristic curve created for the concrete in question could be a useful tool even outside of practical applications.en
dc.formattextcs
dc.format.extent1-17cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2019, vol. 12, issue 17, p. 1-17.en
dc.identifier.doi10.3390/ma12172705cs
dc.identifier.issn1996-1944cs
dc.identifier.orcid0000-0002-8273-4571cs
dc.identifier.orcid0000-0002-4417-8746cs
dc.identifier.orcid0000-0001-8980-298Xcs
dc.identifier.other158157cs
dc.identifier.researcheridAAW-8720-2020cs
dc.identifier.researcheridAAX-7841-2020cs
dc.identifier.scopus56721310500cs
dc.identifier.scopus16744040800cs
dc.identifier.urihttp://hdl.handle.net/11012/181100
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/12/17/2705cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1944/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectRebound hammeren
dc.subjectSilverSchmidten
dc.subjectconcreteen
dc.subjectcompressive strengthen
dc.subjectnon-destructive testingen
dc.titleCharacteristic Curve and Its Use in Determining the Compressive Strength of Concrete by the Rebound Hammer Testen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-158157en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:45:43en
sync.item.modts2025.01.17 15:24:39en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav stavebního zkušebnictvícs
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