ANALYSIS OF THE INFLUENCE OF TRANSDUCER FREQUENCY ON THE ULTRASONIC MEASUREMENT OF CONCRETE HOMOGENEITY

Authors

  • Dalibor Kocáb
  • Petr Misák
  • Barbora Jindrová
  • Martin Alexa
  • Tomáš Vymazal

DOI:

https://doi.org/10.14311/APP.2019.22.0048

Keywords:

ultrasonic pulse velocity test, concrete, concrete homogeneity, transducer frequency

Abstract

The paper analyses the influence of transducer frequency on the determination of concrete homogeneity using the ultrasonic pulse velocity test. Transit time measurements were made on a 590×590mm concrete slab, with 110mm in thickness, in a raster of 5×5 points, which means the slab was tested in 25 places. The tests were made using a Pundit PL-200 ultrasonic tester using transducers set at 54, 82, and 150 kHz. Two types of measurements were performed – spot measurements of the ultrasonic pulse transit time at each point and full area scanning. The paper is concluded by an evaluation of the concrete slab’s homogeneity measured by different transducers and techniques in addition to a statistical analysis of how the results are affected by the transducer frequency.

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Published

2019-07-25

Issue

Vol. 22 (2019): SPECIAL CONCRETE AND COMPOSITES 2018

Section

Articles

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