Shear resistance of <scp>RC</scp> elements without shear reinforcement with a dose of tire waste steel and industrial steel fibers

Abstract The paper presents an investigation of the mechanical behavior of fiber‐reinforced concrete utilizing waste tire and industrially manufactured fibers. The first part of the paper concentrates on material research, indicating that the incorporation of fibers enhances concrete performance, particularly in terms of prismatic compressive strength, which averaged 45.7 MPa, with a notable 14.6% increase observed in specimens 2C. Specimens with a dose of fibers demonstrated a significantly enhanced f R3 , depending on the geometry and end shape of the fibers. The second part examines the shear resistance in reinforced concrete elements without shear reinforcement. Fibers markedly improved shear performance across all mix designs, with specimen 2B realizing a 26.7% increase in shear resistance. Normalized results substantiate the advantageous effects of all tested fiber types. The study concludes that the standard MC 2020 for predicting shear resistance with fibers provides a safe and cost‐effective structural design.