Steel Fiber For Fatigue Resistance
Fatigue resistance of steel fiber compared with ordinary concrete, the flexural and compressive fatigue properties of steel fiber reinforced concrete are greatly improved.
For example, when the bending fatigue life is 106 times, the stress ratio of steel fiber reinforced concrete with 1.5% fiber content is 0.68, while that of ordinary concrete is only 0.51.
When the stress ratio is 0.7, the bending fatigue life of steel fiber such as hooked steel fiber reinforced concrete exceeds 105 times, while that of ordinary concrete is only 850 times.
Another example is: when the compressive fatigue life of steel fiber like copper coated steel wire reinforced concrete with 2% fiber reaches 2*106 times, the specific force can reach 0.92, while the stress ratio of ordinary concrete is only 0.56.
It can be seen that the use of steel fiber reinforced concrete can significantly improve its fatigue life in projects bearing fatigue loads such as pavement and pier.