Method for introducing carbon nanotubes into fine-grained concrete

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Abstract

This work discusses the use of a modifying complex additive to concrete with the inclusion of carbon nanotubes “Taunit-M” and the SP-3 plasticizer. Two methods of introducing nano-sized additives into the composition of fine-grained concrete, as well as their combination, are considered. The results of a series of tests of beam samples aged 28 days are presented using two methods of introducing nanotubes, namely: the use of an ultrasonic dispersant and the use of a linear induction rotator (LIR). The positive effect of introducing nanotubes on the strength characteristics of concrete has been established. It has been determined that the use of LIR technology provides an increase in strength due to a double effect: activation of the cement binder and distribution of the nanoadditive using active mixing due to vortex action. Ultrasonic dispersion, in turn, ensures the effective introduction of the plasticizer into the mixing water.

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About the authors

D. A. Lyashenko

Volgograd State Technical University

Author for correspondence.
Email: dmitiry.lyashenko@yandex.ru

Graduate Student, Institute of Architecture and Construction 

Russian Federation, 1, Akademicheskaya Street, Volgograd, 400074

V. A. Perfilov

Volgograd State Technical University

Email: vladimirperfilov@mail.ru

Doctor of Sciences (Engineering), Professor, Institute of Architecture and Construction 

Russian Federation, 1, Akademicheskaya Street, Volgograd, 400074

E. Yu. Dubtsova

Volgograd State Technical University

Email: elenakozlovtseva@gmail.com

Senior Lecturer, Institute of Architecture and Construction 

Russian Federation, 1, Akademicheskaya Street, Volgograd, 400074

M. E. Nikolaev

Volgograd State Technical University

Email: mr.maks.nikolaev.1994@mail.ru

Candidate of Sciences (Engineering), Senior Lecturer, Institute of Architecture and Construction 

Russian Federation, 1, Akademicheskaya Street, Volgograd, 400074

V. I. Klimenko

Volgograd State Technical University

Email: vasa_klim@mail.ru

Candidate of Sciences (Engineering), Assistant Professor, Institute of Architecture and Construction 

Russian Federation, 1, Akademicheskaya Street, Volgograd, 400074

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2. Fig. 1. Compressive strength indicators under: a – compression; b – bending

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3. Fig. 2. Microstructure of the sample with the introduction of CNTs in the amount of: a – 0.0001%; b – 0.0005%; c – 0.001%

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