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Ultrasonic wave dispersion and attenuation in fresh mortar

D. G. Aggelis, T. P. Philippidis

Onderzoeksoutput: Articlepeer review

71 Citaten (Scopus)

Samenvatting

Results from an experimental study of ultrasonic, through-transmission, wave propagation on fresh cementitious material are discussed in this paper. The propagation characteristics of different frequency tone-bursts revealed the strong dispersive behavior of this type of materials while using sine-sweep excitation, the attenuation up to about 1 MHz was examined. Sand content and size exercise significant influence on wave parameters while entrapped air bubbles seem to dominate the attenuation at low frequencies since cement paste specimens, containing no sand, exhibit strong attenuation. The possibility of mortar composition characterization within 10 min after mixing is also addressed leading to encouraging results.

Originele taal-2English
Pagina's (van-tot)617-631
Aantal pagina's15
TijdschriftNDT and E International
Volume37
Nummer van het tijdschrift8
DOI's
StatusPublished - 1 dec. 2004

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