Arc-shaped steel fiber, manufacturing mold and method and concrete applying steel fiber

The invention provides an arc-shaped steel fiber which is characterized in that a main body of the arc-shaped steel fiber is an arc, anchoring sections can be arranged at the two ends of the fiber in order to improve anchoring of the fiber in a base body, each anchoring section can be composed of one or more continuously-arranged end hooks, and each end hook is composed of an arc section and a linear section. Aiming at overcoming that a one-dimensional size fiber in a base body has defects in a bridging mechanism and the crack inhibition capability, the arc-shaped steel fiber with the two-dimensional size characteristic is prepared,the arc-shaped steel fibers are paved on the whole mold in advance, through the mutual hooking effect of the arc-shaped steel fibers, the two-time bridging effect of the arc-shaped steel fibers on base body cracks and the advantage effect that two fibers can form a closed space in a base body to restrain crack propagation, the inhibition efficiency of crack propagation is improved,