Carbon materials for electrically conductive concrete

Abstract

EN: Problem statement. Electrically conductive concrete [1] is a promising direction in the creation of smart concrete. In this case, they can act as generators of electrical energy, heat energy, accumulators of electricity, elements of protection against electromagnetic fields. The mechanism of electrical conductivity in composite electrically conductive materials is quite complex. In the simplest case, charge transfer can occur through direct contact between aggregate particles. Therefore, electrically conductive concrete must contain an electrically conductive aggregate. Electrically conductive aggregates can be combined into two main groups: a) metal; b) carbon [2]. One of the most important criteria for the filler of electrically conductive composites is availability and low cost. Therefore, it is advisable to use inexpensive electrically conductive fillers. These conditions are most fully satisfied by carbon fillers. Carbon, like a metal, has electronic conductivity. Carbon fillers include soot, graphite, carbon black, coke. These fillers are cheap, available in any region, and have low electrical resistivity. Currently, there is no generally accepted method for determining the electrical resistivity of electrically conductive fillers, so its development and testing is necessary.