Electrically Conductive Roller-Compacted Concrete (RCC) Containing BOFS, Steel Fiber, and Steel Shaving

In this study, the feasibility of using steel fibers and steel shavings in roller-compacted concrete containing coarse basic oxygen furnace slag aggregate was investigated in order to improve its mechanical properties and to produce an electrically conductive and environment-friendly concrete. For this purpose, various samples containing 0.4, 0.7, and 1% of steel fiber and 3, 5, and 7% of steel shaving were fabricated. The compressive strength, indirect tensile strength, electrical resistance, and specific density tests were conducted on the samples. The results demonstrated the positive effect of steel fiber and the destructive effect of steel shaving on the compressive and tensile strengths of RCC containing BOFS. The results of the electrical resistance test showed a more positive effect of steel shaving than steel fiber in the conductivity of RCC samples. Regarding the specific gravity results, the natural aggregate replacement with BOFS as well as steel fiber and steel shaving resulted in an increase in the specific gravity of the mixtures. Utilizing the both steel fiber and steel shaving can compensate the unfavorable properties on the RCC containing BOFS.

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