Synergistic Bond Properties of Different Deformed Steel Fibers Embedded in Mortars Wet-Sieved from Self-Compacting SFRC

Reliable bond of steel fiber in concrete is a key problem relating to the reinforcing effect on matrix and for guide significance optimal design geometry mechanical properties fiber. In this paper, basis multi-indices evaluation single hooked-end fiber, indices synergistic different deformed fibers are proposed. The pull-out tests were carried out embedded mortar wet-sieved from self-compacting SFRC with manufactured sand. Fourteen types used, including six hooked-end, two crimped, four indentation, one milling, large-end. strength, energy, toughness per unit weight evaluated correspondence loading status cracking resistance, normal serviceability, ultimate bearing capacity concrete. Results show that presented behaviors, crimped circular cross-sections tensile strength higher than 1150 MPa have excellent effects strengthening, energy dissipation, toughening cubic compressive 60 at serviceability capacity. Indentation, large-end more suitable due rigid before cracking. working should be concerned realize only or simultaneously