Concrete with Metal Fiber

Concrete with metal fiber is a novel composite material formed by incorporating an appropriate amount of short steel fibers into the matrix of ordinary concrete. It can be constructed using traditional casting methods or sprayed forming techniques and possesses excellent physical and mechanical properties. Compared to conventional concrete, concrete with metal fiber not only overcomes the inherent drawbacks of low tensile strength, limited elongation, and brittleness of ordinary concrete, but also significantly enhances its flexural, shear, tensile, fatigue, and crack resistance properties.

The incorporation of steel fibers significantly improves the crack resistance and toughness of concrete. This is especially notable when the material is subjected to external impacts, loads, or extreme environmental conditions. Metal fibers, uniformly distributed within the concrete matrix, effectively prevent crack propagation and enhance the material's fatigue and impact resistance. Studies show that when the steel fiber content is 15%-20% and the water-cement ratio is 0.45, the tensile strength of steel fiber reinforced concrete can increase by 50%-70%, the flexural strength can rise by 120%-180%, the impact strength can improve by 10-20 times, the impact fatigue strength can increase by 15-20 times, the flexural toughness can increase by approximately 14-20 times, and the wear resistance also shows significant improvement.