ELECTRICALLY CONDUCTIVE CEMENT SYSTEMS BASED ON CAR-BON BLACK AND CARBON FIBER
Rubrics: MAIN RUBRIC
Authors:
1.
Moscow, Moscow, Russian Federation
2.
Moscow, Moscow, Russian Federation
Type:
Article
Pages:
from 213
to 225
Status:
Received:
03.06.2024
Accepted:
26.06.2024
Published:
22.07.2024
Language:
Russian, English
Keywords:
Portland cement, carbon black, carbon fiber, electrical resistivity
Funding:
The work was carried out at NIU MSCU within the framework of the University Development Program “PRIORITY 2030”. Project 3.1 “Scientific breakthrough in the construction industry - new technologies, new materials, new methods”.
Abstract (English):
An approach to the production of conductive concrete with the heating property based on a Portland cement binder and conductive components is presented. The influence of the content of conductive components introduced into the con-crete mixture, which are carbon black K-354 and P-803, graphite, carbon fiber on conductive properties, is considered. The influence of the presence of free water in the pore space of concrete on the formation of a conductive structure with the content of conductive components below the percolation threshold of electric current has been studied. The influence of the volume concentration of conductive components on the value of electrical resistivity and its change during the hardening process at the age of 3 to 56 days is shown. The compositions of a composite conductive material based on Portland cement, carbon black and carbon fiber with a specific electrical resistance from 1.12 to 0.26 Ohm·m at the age of 56 days are obtained, which do not change significantly during hardening and further use.
An approach to the production of conductive concrete with the heating property based on a Portland cement binder and conductive components is presented. The influence of the content of conductive components introduced into the con-crete mixture, which are carbon black K-354 and P-803, graphite, carbon fiber on conductive properties, is considered. The influence of the presence of free water in the pore space of concrete on the formation of a conductive structure with the content of conductive components below the percolation threshold of electric current has been studied. The influence of the volume concentration of conductive components on the value of electrical resistivity and its change during the hardening process at the age of 3 to 56 days is shown. The compositions of a composite conductive material based on Portland cement, carbon black and carbon fiber with a specific electrical resistance from 1.12 to 0.26 Ohm·m at the age of 56 days are obtained, which do not change significantly during hardening and further use.
Keywords:
Portland cement, carbon black, carbon fiber, electrical resistivity
Portland cement, carbon black, carbon fiber, electrical resistivity
