the Reinforcement effect

The steel fibers are mainly used in the manufacture of steel fiber reinforced concrete, any types of steel fiber with any method to produce all can reinforce the concrete.
 
Reinforcement effect of the steel fiber depends on the matrix material strength (fm), fiber aspect ratio (steel fiber length l and diameter d ratio, that I / d), the volume of the fibers (steel fibers in the fiber volume percentage of steel in concrete ), the bond strength between the fiber and matrix material(τ), and fiber distribution in the matrix material and orientation (η) impact. When the steel fiber reinforced concrete is damaged, mostly fibers are pulled out, not pulled off, thus improving the bond strength between the fiber and the matrix material is one of the main controlling factors in improving fiber reinforced effect.