FRACTURE TOUGHNESS OF CARBON NANOTUBES MODIFIED CEMENT BASED MATERIALS

Authors

  • Sergey Aleksandrovich Zhdanok LLC "Advanced Research and Technologies"
  • Elena Nikolaevna Polonina Belarusian National Technical University
  • Elena Alexandrovna Sadovskaya Belarusian National Technical University
  • Sergej Nikolaevich Leonovich Belarusian National Technical University

DOI:

https://doi.org/10.36773/1818-1112-2021-126-3-48-53

Keywords:

fracture toughness, crack resistance, strength, nanoconcrete, carbon nanotubes, stress intensity factor

Abstract

In order to increase the fracture toughness of concrete, dispersed fiber reinforcement is increasingly used in practice. The initiation of crack initiation
occurs at the nanoscale in the cement matrix. Thus, the use of nano-reinforcement with dispersed nanoparticles can have a positive effect on the
fracture toughness of the cement composite. It is proposed to consider carbon nanotubes (CNTs) as such nanofibers.
This article discusses the possibility of using nanocarbon tubes as elements for restraining the development of cracks at the nanoscale in
cement composite. The results of testing nanomodified cement stone for strength indicators, fracture toughness indicators, results of
nanoindentation, ultrasonic sounding and infrared spectroscopy are presented. A structural model of a cement stone dispersed-reinforced with
nanocarbon tubes is considered.

Author Biographies

Sergey Aleksandrovich Zhdanok, LLC "Advanced Research and Technologies"

Doctor of Physical and Mathematical Sciences, Academician of the National Academy of Sciences of Belarus, LLC "Advanced Research and Technologies", Minsk district, village Leskovka, Belarus.

Elena Nikolaevna Polonina, Belarusian National Technical University

Master of Technical Sciences, Belarusian National Technical University, Minsk, Belarus.

Elena Alexandrovna Sadovskaya, Belarusian National Technical University

Master of Technical Sciences, Belarusian National Technical University, Minsk, Belarus.

Sergej Nikolaevich Leonovich, Belarusian National Technical University

Doctor of Technical Sciences, Professor, Foreign Academician of RAASN, Belarusian National Technical University, Minsk, Belarus, Qingdao University of Technology China, Qingdao.

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Published

2021-12-02

How to Cite

(1)
Zhdanok, S. A.; Polonina, E. N.; Sadovskaya, E. A.; Leonovich, S. N. FRACTURE TOUGHNESS OF CARBON NANOTUBES MODIFIED CEMENT BASED MATERIALS. Вестник БрГТУ 2021, 48-53.

Issue

No. 3(126) (2021): Vestnik of Brest State Technical University

Section

Civil and Environmental Engineering

License

Copyright (c) 2021 Brest State Technical University

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