The relationship between resistances measured by two-probe, Wenner probe and C1760-12 ASTM methods in electrically conductive concretes

Abstract

In recent years, the investigation of electrically conductive concrete between construction building materials has been one of the interesting subjects. Therefore, it is important to examine and compare electrical resistance measurement methods. In previous studies, the resistance of electrically conductive concretes was measured by different methods. In this study, it is aimed to measure the resistivity value by three different methods and compare them with each other. For this purpose, two-phase electrical conductive concretes with eight different mixes and additional control concrete were produced. Two different proportions of carbon fiber and four different ratios of recycled nanocarbon black were used in the mixtures. The electrical resistivity of the produced cylindrical specimens was measured by two-probe, Wenner probe and C1760-12 ASTM methods. According to the regression coefficients obtained in the results, the linear relationships between the resistivity values measured with all three methods were found to be appropriate. In addition, the nanocarbon black additive used significantly increased the conductivity of carbon fiber. Nanocarbon black and carbon fiber have also been useful in improving the compressive strength of electrically conductive concretes.