AbstractThe article provides an overview of existing parameters of concrete mixture workability estimates for steel fiber concrete. The study shows that the standard concrete workability parameters such as mobility, stiffness, spread, viscosity may not be used for steel fiber concrete mixtures. We propose evaluation of the steel fiber-concrete mixture workability using the dimensionless coefficient, which is a stress magnitude for the steel fiber concrete mixture at the normal stress unit value. Using of a standard laboratory tool for a single plane shear soil tests with larger rings is recommended for testing. The resulting values for the dimensionless coefficient are approximated by mathematical relations with a high reproducibility. The proposed mathematical model of the dimensionless coefficient provides a clear determination of the steel fiber concrete mixture workability.