Publication detail

Testing an Impedance Non-destructive Method to Evaluate Steel-Fiber Concrete Samples

KOMÁRKOVÁ, T. FIALA, P. STEINBAUER, M. ROUBAL, Z.

Original Title

Testing an Impedance Non-destructive Method to Evaluate Steel-Fiber Concrete Samples

Type

journal article in Web of Science

Language

English

Original Abstract

Steel-fiber reinforced concrete is a composite material characterized by outstanding tensile properties and resistance to the development of cracks. The concrete, however, exhibits such characteristics only on the condition that the steel fibers in the final, hardened composite have been distributed evenly. The current methods to evaluate the distribution and concentration of a fiber composite are either destructive or exhibit a limited capability of evaluating the concentration and orientation of the fibers. In this context, the paper discusses tests related to the evaluation of the density and orientation of fibers in a composite material. Compared to the approaches used to date, the proposed technique is based on the evaluation of the electrical impedance Z in the band close to the resonance of the sensor-sample configuration. Using analytically expressed equations, we can evaluate the monitored part of the composite and its density at various depths of the tested sample. The method employs test blocks of composites, utilizing the resonance of the measuring device and the measured sample set; the desired state occurs within the interval of between f=3 kHz and 400 kHz.

Keywords

Steel-fiber; concrete; non-destructive testing; electromagnetic field; electric impedance

Authors

KOMÁRKOVÁ, T.; FIALA, P.; STEINBAUER, M.; ROUBAL, Z.

Released

1. 3. 2018

Publisher

DE GRUYTER POLAND SP ZOO

Location

WARSAW

ISBN

1335-8871

Periodical

Measurement Science Review

Year of study

18

Number

1

State

Slovak Republic

Pages from

35

Pages to

40

Pages count

6

URL

http://www.degruyter.com/view/j/msr.2017.18.issue-1/msr-2018-0006/msr-2018-0006.xml?format=INT

Full text in the Digital Library

http://hdl.handle.net/11012/84107

BibTex

@article{BUT146812,
  author="Tereza {Komárková} and Pavel {Fiala} and Miloslav {Steinbauer} and Zdeněk {Roubal}",
  title="Testing an Impedance Non-destructive Method to Evaluate Steel-Fiber Concrete Samples",
  journal="Measurement Science Review",
  year="2018",
  volume="18",
  number="1",
  pages="35--40",
  doi="10.1515/msr-2018-0006",
  issn="1335-8871",
  url="http://www.degruyter.com/view/j/msr.2017.18.issue-1/msr-2018-0006/msr-2018-0006.xml?format=INT"
}