Application of Steel Fiber Reinforced Concrete in Different Projects

1. The application of steel fiber reinforced concrete in water conservancy projects

steel fiber reinforced concrete (SFRC) is widely used in water conservancy projects. It is mainly used in places where the parts are strongly affected by high-speed water flow and complex forces, such as spillways, drainage holes, pressure drainage channel, stilling pool, lock floor and sluices, ship locks, aqueducts, dam seepage panels and slope protection, etc.

2. The application of steel fiber reinforced concrete in construction engineering projects

The use of steel fiber reinforced concrete (SFRC) in construction projects has become more and more extensive, generally it is used in engineering fields such as housing construction , precast pile, frame joints, roof waterproofing, underground waterproofing, etc.

For example, the use of steel fiber reinforced concrete in the seismic frame joints can replace the stirrups to meet the requirements on the joints for their strength, ductility, energy consumption and other aspects. It can also provide a similar effect to the restraint strength of the stirrups on the concrete, and solve the problem that concrete is difficult to cast due to the compression of steel bars in the joints.

3. The application of steel fiber reinforced concrete in road and bridge engineering projects

Steel fiber coagulation is widely used in road and bridge engineering, mainly in road surfaces, bridges, airport runways and other projects, including new construction and repair projects. Compared with normal concrete, steel fiber reinforced concrete of our steel fiber company has better toughness, impact resistance and fatigue resistance. It helps to reduce the thickness of the surface layer, lengthen the space between expansion joints, improve service performance, and thus to reduce maintenance costs, and prolong service life. The thickness of surface layer can be reduced by 30 to 50% compared with ordinary concrete. While the distance between highway expansion joints can up to 30 to 100m, and the distance between airport runway expansion joints can reach 30m. As to the pavement and bridge deck repairs, the thickness of the cover is only 3 to 5cm.

4. The application of steel fiber reinforced concrete in railway engineering projects

In railway engineering, steel fiber reinforced concrete is mainly used in prestressed steel fiber reinforced concrete (SFRC) railway sleepers, double-block railway sleepers and waterproof protective layer for emergency repair of railway bridge deck. Because the railway engineering bears heavier loads, higher speeds and tens of thousands times of vibrations, so concrete must have higher strength, higher impact resistance and greater plasticity. This takes advantage of the special properties of steel fiber reinforced concrete. Good results has proved this. The application of steel fiber reinforced concrete has greatly reduced the maintenance workload and increased the service life of the line.

5. The application of steel fiber reinforced concrete in port and ocean engineering projects

In the use of steel fiber reinforced concrete in marine engineering, people are mainly concerned for the corrosion problem of steel fiber reinforced concrete. Still, further research is needed, but the experiences in Japan and Norway is encouraging. The Japanese Iron and Steel Club used steel fiber reinforced concrete to make the anti-corrosion layer of steel pipe piles. 10-year-soaking in sea water has proved the anti-corrosion quality of the steel fiber reinforced concrete. The surface of the steel pipe is not corroded and still has metallic luster. Norway used steel fiber reinforced concrete for the tunnel lining of the North Sea submarine gas pipeline, the support of the submarine nuclear waste storage of nuclear power plants, the plugging of post-tensioned prestressed pipe holes of offshore platforms and the repair of corroded parts of the concrete in wharves.