Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13337
DC FieldValueLanguage
dc.contributorDepartment of Land Surveying and Geo-Informatics-
dc.contributorDepartment of Civil and Environmental Engineering-
dc.creatorLai, WL-
dc.creatorWang, YH-
dc.creatorKou, SC-
dc.creatorPoon, CS-
dc.date.accessioned2015-07-14T01:32:10Z-
dc.date.available2015-07-14T01:32:10Z-
dc.identifier.issn0963-8695-
dc.identifier.urihttp://hdl.handle.net/10397/13337-
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.subjectDispersionen_US
dc.subjectEarly age concreteen_US
dc.subjectHoneycomben_US
dc.subjectUltrasonic guided surface waveen_US
dc.titleDispersion of ultrasonic guided surface wave by honeycomb in early-aged concreteen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage7-
dc.identifier.epage16-
dc.identifier.volume57-
dc.identifier.doi10.1016/j.ndteint.2013.03.001-
dcterms.abstractA pair of 50 kHz P-wave ultrasonic sensors was used in this research to study the effects of concrete containing honeycomb on ultrasonic guided surface wave propagation shortly after the initial few hours of mixing and after 28 days. Honeycomb was made inside the 100 mm thick concrete specimens by adjusting dosage of superplasticizer. The pair of sensors were accommodated 100 mm apart from each other, at the soffit and on the same side of the formwork. The ultrasonic guided surface wave signals were continuously measured and post-processed by short time Fourier transform (STFT) to evaluate the frequency spectra along the time axis. Over the ultrasonic time window, the frequency spectra were very dispersed for the specimens with honeycombs. The results suggested that during the early hydration of concrete, the added water filled the honeycombs and led to incoherent surface wave that significantly dispersed the frequency spectra. It is because the size of the honeycomb is in the same order as the wavelength the scattered surface wave. With this method, the presence of honeycomb immediately after casting of concrete can be detected non-destructively.-
dcterms.bibliographicCitationNDT and E international, 2013, v. 57, p. 7-16-
dcterms.isPartOfNDT and E International-
dcterms.issued2013-
dc.identifier.isiWOS:000319848500002-
dc.identifier.scopus2-s2.0-84876102949-
dc.identifier.rosgroupidr64714-
dc.description.ros2012-2013 > Academic research: refereed > Publication in refereed journal-
Appears in Collections:Journal/Magazine Article
Access
View full-text via PolyU eLinks SFX Query
Show simple item record

SCOPUSTM   
Citations

10
Last Week
0
Last month
0
Citations as of Aug 28, 2020

WEB OF SCIENCETM
Citations

9
Last Week
0
Last month
0
Citations as of Oct 20, 2020

Page view(s)

157
Last Week
0
Last month
Citations as of Oct 18, 2020

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.