Analysis of Acoustic Emission Signals Recorded during Freeze-Thaw Cycling of Concrete

Simple item page
dc.contributor.authorTopolář, Liborcs
dc.contributor.authorKocáb, Daliborcs
dc.contributor.authorPazdera, Lubošcs
dc.contributor.authorVymazal, Tomášcs
dc.coverage.issue5cs
dc.coverage.volume14cs
dc.date.accessioned2021-05-17T10:53:07Z
dc.date.available2021-05-17T10:53:07Z
dc.date.issued2021-03-05cs
dc.description.abstractThis manuscript deals with a complex analysis of acoustic emission signals that were recorded during freeze-thaw cycles in test specimens produced from air-entrained concrete. An assessment of the resistance of concrete to the effects of freezing and thawing was conducted on the basis of a signal analysis. Since the experiment simulated testing of concrete in a structure, a concrete block with the height of 2.4 m and width of 1.8 m was produced to represent a real structure. When the age of the concrete was two months, samples were obtained from the block by core drilling and were subsequently used to produce test specimens. Testing of freeze-thaw resistance of concrete employed both destructive and non-destructive methods including the measurement of acoustic emission, which took place directly during the freeze-thaw cycles. The recorded acoustic emission signals were then meticulously analysed. The aim of the conducted experiments was to verify whether measurement using the acoustic emission method during Freeze-thaw (F-T) cycles are more sensitive to the degree of damage of concrete than the more commonly employed construction testing methods. The results clearly demonstrate that the acoustic emission method can reveal changes (e.g., minor cracks) in the internal structure of concrete, unlike other commonly used methods. The analysis of the acoustic emission signals using a fast Fourier transform revealed a significant shift of the dominant frequency towards lower values when the concrete was subjected to freeze-thaw cycling.en
dc.formattextcs
dc.format.extent1-16cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2021, vol. 14, issue 5, p. 1-16.en
dc.identifier.doi10.3390/ma14051230cs
dc.identifier.issn1996-1944cs
dc.identifier.other170386cs
dc.identifier.urihttp://hdl.handle.net/11012/196747
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/14/5/1230cs
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.subjectacoustic emission methoden
dc.subjectfreeze-thaw cyclesen
dc.subjectconcreteen
dc.subjectsignal analysisen
dc.subjectshort-time Fourier transformen
dc.subjectfast Fourier transformen
dc.titleAnalysis of Acoustic Emission Signals Recorded during Freeze-Thaw Cycling of Concreteen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-170386en
sync.item.dbtypeVAVen
sync.item.insts2021.07.01 08:53:56en
sync.item.modts2021.07.01 08:14:37en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav fyzikycs
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav stavebního zkušebnictvícs
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
materials1401230v2.pdf
Size:
4.85 MB
Format:
Adobe Portable Document Format
Description:
materials1401230v2.pdf
Download
Collections
Ústav stavebního zkušebnictví
Ústav fyziky