Abstract
Electrical resistivity is one of the key electro-physical characteristics describing the steel fiber reinforced concrete’s ability to conduct electric current. The experiments were carried out to test the hypothesis for the occurrence of a short-circuit effect in steel-fiber concrete structures for the method of electrode heating. Further studies were made to determine the electrical resistivity for various compositions of steel fiber reinforced concrete. The mathematical regularity was found to determine the change of specific electrical resistance subject to the water-cement ratio, the percentage of fiber, the modulus of the fiber surface, and the size of the aggregates. Graphic nomograms (a group of line charts) were made to determine the value of the electrical resistivity for steel fiber reinforced concrete and choose the parameters of electrical heating and the appropriate operating mode of technological equipment.
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