The tensile strength of steel fibers used in airport runways varies significantly depending on their type and production process, generally ranging from 400MPa to 3000MPa.

The tensile strength of ultra-high-strength steel fibers is significantly influenced by production processes and materials. For instance, the tensile strength of shear-type steel fibers is typically not less than 400MPa, whereas the tensile strength of cold-drawn and cut steel fibers can reach 1150MPa to 3000MPa. End-hook steel fibers can achieve a tensile strength of 800MPa to 1200MPa through cold work hardening processes. In terms of materials, low-carbon alloy steel fibers exhibit a wide range of tensile strengths, generally from 300MPa to 2500MPa.

In airport runway projects, the strength of steel fibers directly affects the crack resistance, flexural strength, and impact resistance of concrete. In practical applications, the amount of steel fibers (such as 40-80kg/m³) needs to be determined according to the design requirements for flexural-tensile strength to ensure the durability of the pavement. For example, engineering cases show that after incorporating fibers, the flexural strength of concrete can be increased to 6.8MPa, and the impact energy absorption value can reach 12J/cm².