Influence of Magnetite Nanoparticles on Mechanical and Shielding Properties of Concrete

Authors

  • A. B. Lesbayev Institute of Combustion Problems, 172 Bogenbai Batyr Str., Almaty, Kazakhstan; al-Farabi Kazakh National University, 71 al-Farabi Pr., Almaty, Kazakhstan https://orcid.org/0000-0001-8433-9279
  • B. Elouadi Universite De La Rochelle Avenue Michel Crépeau 17042 La Rochelle cédex 01, France https://orcid.org/0000-0003-4752-6301
  • T. V. Borbotko Belarusian State University of Informatics and Radioelectronics, Pietrusia Broŭki 6 str., Minsk, Belarus
  • S. M. Manakov al-Farabi Kazakh National University, 71 al-Farabi Pr., Almaty, Kazakhstan
  • S. T. Smagulova Institute of Combustion Problems, 172 Bogenbai Batyr Str., Almaty, Kazakhstan; al-Farabi Kazakh National University, 71 al-Farabi Pr., Almaty, Kazakhstan
  • O. V. Boiprav Belarusian State University of Informatics and Radioelectronics, Pietrusia Broŭki 6 str., Minsk, Belarus
  • N. G. Prikhodko Institute of Combustion Problems, 172 Bogenbai Batyr Str., Almaty, Kazakhstan

DOI:

https://doi.org/10.18321/ectj666

Keywords:

magnetite, concrete, nanoparticles, flexural strength, magnetic hysteresis, shielding properties, microwave

Abstract

This paper presents an experimental study on the performance of shielding concrete with additives of magnetite nanoparticles. Two concretes with magnetite additives as well as one based concrete were tested. In order to achieve the high-performance concrete, all concrete mixes had a constant water/cement ratio of 0.45. In order to measure the mechanical properties, concrete samples were made in accordance with dimension such as 40 × 40 × 160 mm. But, for measurement of protective properties the concrete was made in accordance with dimension of rotary antennas such as 400 × 400 mm with a thickness of 10 mm. The nanoparticles Fe3O4 were synthesized by chemical condensation method. XRD have shown the presence of cubic structure of Fe3O4 spinel with crystallite size is equal to 130.0 Å. The TEM microphotograph shows that theFe3O4 nanoparticles are spherical, the range of sizes is 12‒30 nm. The magnetic retardation suggests that the magnetite nanoparticles have superparamagnetic properties. This is explained by the fact that under the influence of external magnetic field, they are single-domain, in other words, they become uniformly magnetized throughout the volume. The additives of magnetite nanoparticles at a concentration of 0.5% mass have not a negative effect on flexural strength. The samples with additives of magnetite nanoparticles showed better shielding of microwave radiation in the frequency range from 0.7 GHz to 13 GHz. The maximum efficiency of suppression of electromagnetic disturbance is equal to 19.9 dB at a frequency of 1.5 GHz with a thickness of 10 mm.

 

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Published

2017-09-15

How to Cite

Lesbayev, A. B., Elouadi, B., Borbotko, T. V., Manakov, S. M., Smagulova, S. T., Boiprav, O. V., & Prikhodko, N. G. (2017). Influence of Magnetite Nanoparticles on Mechanical and Shielding Properties of Concrete. Eurasian Chemico-Technological Journal, 19(3), 223–229. https://doi.org/10.18321/ectj666

Issue

Vol. 19 No. 3 (2017)

Section

Articles

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