UDK 691.32 Бетоны. Бетонные и железобетонные изделия
GRNTI 67.09 Строительные материалы и изделия
OKSO 08.06.01 Техника и технологии строительства
BBK 383 Строительные материалы и изделия
TBK 5415 Строительные материалы и изделия. Производство стройматериалов
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.
Portland cement, carbon black, carbon fiber, electrical resistivity
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