The paper analyzes the method of identifying the maturity of concrete based on the results of measuring the temperature of concrete during its maturation using a temperature sensor built into the concrete. This method controls the maturity of concrete indirectly. The authors propose a method of controlling the maturity of concrete based on the results of direct measurement of its electrical parameters using a three-electrode capacitive sensor built into the concrete. The obtained measurement results are compared with the corresponding parameters of the electrical standard sample of concrete formed under laboratory conditions of its maturation. A feature of the work is that due to the design parameters of the sensor, only concrete without filler is monitored. This ensures the invariance of the results of measuring electrical parameters to the heterogeneity of concrete caused by different ratios of components in the control zone. The use of a three-electrode sensor also eliminates the disadvantages of a two-electrode sensor built into concrete due to the influence of edge effects on the measurement result. The controlled volume of concrete is formed by the specified dimensions of the opening of the third electrode, which is located between two working electrodes. An algorithm for the practical implementation of such a method in real conditions of concrete maturation is presented. At the same time, the equivalent capacitance and active conductivity of the admittance of concrete are measured. Based on the obtained results, the dielectric constant and specific conductivity of concrete are found at constant dimensions of the three-electrode capacitive sensor.
- Temperature monitoring, Maturix, 2022. [Online]. Available: https://maturix.com/solution/temperature-monitoring/
- A. Plugin, S. Musienko, S. Mykytas, “Electrical resistance of reinforced concrete sleepers and its control in production conditions”, Intelligent transport technologies: IV int. scientific-technical conference, abstracts, Kharkiv, November 27-28, 2023, UkrSUZT, pp.333-335.
- L. Trykoz, I. Bagiyants, “Study of electrical resistance of concrete modified with bitumen emulsion”, Problems of reliability and durability of engineering structures and buildings in railway transport: abstracts of the 6th int. scientific-practical conference. conference, Kharkiv, April 19-21, 2017, UkrDUZT, pp.75-76.
- H. Layssi, P. Ghods, A. Alizadeh, M. Salehi, Electrical Resistivity of Concrete, Concrete International, vol. 37(5), pp.41-46, 2015.
- Evaluating Concrete Quality with Electrical Resistivity Test, Giatec Scientific Inc., 2025. [Online]. Available: https://www.giatecscientific.com/education/evaluating- concrete-quality-with-electrical-resistivity/
- L. Xiao, X. Wei, “Determination of Concrete Setting Time Using Electrical Resistivity Measurement”, Journal of Materials in Civil Engineering, no.19(5), pp.423-427, 2007, DOI:10.1061/(ASCE)0899-1561(2007)19:5(423).
- A. Plugin, O. Pluhin, O. Borziak, O. Kaliuzhna, “The Influ- ence of Storage Conditions on the Electric Conductivity of Concrete”, Materials Science Forum, 968:50-60, 2019, DOI: 10.4028/www.scientific.net/MSF.968.50.
- A. Pejman, R. Gupta, “Electrical Resistivity of Concrete for Durability Evaluation: A Review”, Advances in Materials Science and Engineering, vol. 2017, DOI: 10.1155/2017/8453095.
- K. Obla, R. Hong, “Relating the Electrical Resistance of Fresh Concrete to Mixture Proportions”, Advances in Materials Science and Engineering, vol.7(1), 2018, DOI:10.1520/ACEM20170126.
- E. Pokhodilo, M. Flinta, “Admittance method for measuring electrophysical parameters of concrete”, Measurement Tech- nology and Metrology, issue 86(2), number 2, pp. 38-42, 2025. Available: https://doi.org/10.23939/istcmtm2025.02.038