Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ https://doaj.org/art...arrow_drop_down
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
https://doaj.org/article/d620e...
Article . 2019
Data sources: DOAJ
https://dx.doi.org/10.18720/mc...
Other literature type . 2019
Data sources: Datacite
versions View all 2 versions
addClaim

This Research product is the result of merged Research products in OpenAIRE.

You have already added 0 works in your ORCID record related to the merged Research product.

Mechanical and electrical properties of concrete modified by carbon nanoparticles

Механические и электрические свойства бетона, модифицированного углеродными наночастицами
Authors: Urkhanova, Larisa; Buyantuev, Sergey; Urkhanova, Ayuna; Lkhasaranov, Solbon; Ardashova, Galina; Fediuk, Roman; Svintsov, Alexander; +1 Authors

Mechanical and electrical properties of concrete modified by carbon nanoparticles

Abstract

The article presents the study of obtaining electrically conductive concrete using carbon nanoparticles obtained by processing coal in an electric-discharge plasma reactor. An electric-discharge method for producing a sedimentation-resistant and highly dispersed suspension consists in treating coal powder with an electric current in an aqueous medium. Using laser diffraction, it was found that carbon nanoparticles have a particle size in the range from 50 to 500 nm. The microstructure of hardened cement paste was studied using SEM. The compressive strength was tested on cubes with an edge of 100 mm according to EN 12390-6. Determination of the electrical resistance of concrete was carried out on specimens with an edge of 100 mm, placed between two brass plates, through which direct current was passed. The optimum content of carbon nanoparticles (0.01-0.1% wt.) in the binder is evaluated, which allows to obtain high mechanical properties (30-35% higher compressive strength compared to a control specimen. It is proved that the mechanism of action of nanoscale modifiers is most manifested in small doses. The dependences of the physicomechanical properties of Portland cement upon the addition of various amounts of carbon nanoparticles are determined. Physicomechanical and exploitation properties of heavyweight electrically conductive concrete are determined. The kinetics of changes in the electrical resistance of concrete at different curing periods is established.

В статье представлены исследования по получению электропроводного бетона с использованием углеродных наночастиц, полученных при переработке угля в электроразрядном плазменном реакторе. Электроразрядный способ получения седиментационно устойчивой и высокодисперсной суспензии заключается в обработке угольного порошка электрическим током в водной среде. С помощью лазерной дифракции было обнаружено, что углеродные наночастицы имеют размер частиц в диапазоне от 50 до 500 нм. Прочность на сжатие была испытана на кубах с ребром 100 мм в соответствии с EN 12390-6. Определение электрического сопротивления бетона проводилось на образцах с ребром 100 мм, размещенных между двумя латунными пластинами, через которые пропускался постоянный ток. Оценено оптимальное содержание углеродных наночастиц (0,01-0,1% мас.) в вяжущем, что позволяет получить высокие механические свойства бетона (на 30-35% более высокую прочность на сжатие по сравнению с контрольным образцом). Доказано, что механизм действия наноразмерных модификаторов наиболее выражен в малых дозах. Определены зависимости физико-механических свойств цементного камня при введении различного количества углеродных наночастиц. Исследована микроструктура цементного камня при введении углеродных наночастиц методом растровой микроскопии. Определены физико-механические и эксплуатационные свойства тяжелого электропроводящего бетона. Определена кинетика изменения электрического сопротивления бетона в различные сроки твердения.

Keywords

Carbon nanoparticles, Building construction, concretes, carbon nanoparticles, цементные композиты, Engineering (General). Civil engineering (General), вяжущие, cements, 620, Cement-based composites, углеродные наночастицы, Cements, Binders, Concretes, бетоны, цементы, TA1-2040, cement-based composites, TH1-9745, binders

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    3
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Average
Average
Average