Assessment of concrete slab quality and layering by guided and surface wave testing

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TypeArticle
Journal titleACI Materials Journal
Volume104
IssueMay/June 3
Pages268275; # of pages: 8
Subjectconcrete slabs, layering, nondestructive testing, Rayleigh wave, Lamb wave, frequency-wavenumber analysis; Concrete
AbstractThis paper presents an experimental study on the investigation of concrete properties by guided and surface wave nondestructive testing. Applications were made on two large slabs simulating homogeneity and layering in concrete, respectively. An efficient non-intrusive method was used to evaluate the concrete quality by solving the modal propagation problem of Lamb guided waves and Rayleigh surface waves. Lamb waves were used to determine the Poisson's ratio and the Young's modulus of the concrete slabs. Rayleigh waves were identified using Lamb wave fundamental-modes; thereafter, the inverse problem of Rayleigh waves was solved to evaluate the variation of shear wave velocity with depth and thus characterize the layered slab. The obtained results demonstrate the high potential of this tool that can easily be used for insitu assessment of concrete structures.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number49273
18396
NPARC number20378285
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Record identifier436aa4d6-b5e1-4286-89e7-cba175d28e23
Record created2012-07-24
Record modified2016-05-09
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