### Abstract

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 language | English (US) |
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Article number | 102-M17 |

Pages (from-to) | 154-162 |

Number of pages | 9 |

Journal | ACI Materials Journal |

Volume | 102 |

Issue number | 3 |

State | Published - May 1 2005 |

### Keywords

- Poisson's ratio
- Shear
- Test

### ASJC Scopus subject areas

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

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## Cite this

*ACI Materials Journal*,

*102*(3), 154-162. [102-M17].