 This paper examines the use of tire-cycled steel fibers, TRSF, as an alternative to industrial steel fibers for the production of fiber-reinforced concrete. The authors conducted experiments to determine the effects of TRSF on the mechanical properties of concrete. They found that the addition of TRSF improved the mechanical properties of concrete, but also reduced its workability. Based on the experimental data, they developed empirical equations to predict the compressive and splitting tensile strengths of concrete with TRSF. This article was authored by Azair Zeebek, Yasin Onyrelpa's Killik, Ali Isenselik and others.