Shear wave velocity in concrete cylinders (Piles) universal mode method

Richard J. Finno*, Hsiao Chou Chao

*Corresponding author for this work

Research output: Contribution to journalArticle


To apply three-dimensional theoretical guided wave methods to cylindrical concrete elements in practice, the theoretical solution and experimental results have to be converted to a common baseline by the shear wave velocity c T. Evaluation shows the theoretical solutions are independent of the elastic constants of the concrete and surrounding material at certain frequencies. The solutions at these frequencies are termed the universal mode, and the corresponding frequencies are termed the universal mode frequencies (UMFs). Results of observations indicate that a spike corresponding to the UMF can be identified in the resulting spectrum of a vibration test on a concrete pile, and the C T can be computed from the frequency of this particular spike. The C T derived from this experimental approach is shown to be reasonable by comparing the numerically derived phase velocity dispersion curve and the phase velocities measured at the resonant frequencies.

Original languageEnglish (US)
Article number102-M17
Pages (from-to)154-162
Number of pages9
JournalACI Materials Journal
Issue number3
StatePublished - May 1 2005


  • Poisson's ratio
  • Shear
  • Test

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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