cnsteelfiber

  1. Introduction of steel fiber reinforced concrete   Steel fiber reinforced concrete is a new type of multi-phase composite material formed by mixing random steel fibers in ordinary concrete. These chaotically distributed steel fibers can effectively hinder the expansion of micro-cracks and the formation of macro-cracks in concrete, significantly improve the tensile, flexural, impact and fatigue resistance of concrete, and have good ductility.   2. Steel fiber reinforced concrete constituent materials   Steel fiber reinforced concrete  is composed of steel fiber. The reinforcing effect of steel fiber is related to the length, diameter (or equivalent diameter), aspect ratio and surface shape of steel fiber;   Cement is a kind of cementing material in steel fiber  reinforced concrete, mixed with water to synthesize cement slurry, has a high bonding force, cements sand, stone and steel fiber into a whole, and after setting and hardening, it forms a stee...

  In the process of project construction, the use of new steel fiber reinforced concrete construction technology can not only effectively ensure the construction quality of the project, but also ensure the construction progress of the project, and ensure that the project is completed on time, with high quality. At the same time, in addition to the use of new steel fiber reinforced concrete construction technology, construction process such as engineering design, concrete mixing, pouring, joint treatment, forming and reinforcement are also indispensable.   1. Mixing construction of steel fiber reinforced concrete   Scientific mixing methods and high-quality mixing are important guarantees for the quality of steel reinforced fiber concrete such as hooked end steel fiber . When mixing steel fiber reinforced concrete, the construction unit should choose a professional mixing machine for mixing, so that the dispersion force of the concrete can be well controlled and the mixing...

  1. Steel fiber reinforced concrete used in bridge deck pavement   The application of steel fiber reinforced concrete technology to the pavement construction of the bridge can improve the crack resistance, flexural resistance and durability of the bridge, and ensure the safety and comfort of driving; extend the service life of the bridge and increase the strength of the bridge; By reducing the thickness of the bridge surface paving can reduce the weight of the bridge and realize the improvement of the bridge's stress condition.   At the same time, steel fiber reinforced concrete of our steel fiber company  can also be combined with rubber asphalt concrete to jointly improve the quality of bridge deck paving.   2. Steel fiber reinforced concrete is used to reinforce local structures such as bridge piers and abutments   Under long-term dynamic load, the bridge deck and bridge piers and abutments of the bridge will have surface peeling or cracks. In order to ...

  1. Use steel fiber reinforced concrete to make pavement   The use of steel fiber reinforced concrete for pavement production requires certain methods. The double-layer composite structure refers to replacing most of the pavement materials with steel fiber reinforced concrete.   The three-layer production method is to pave a three-layer pavement, of which the upper and lower two layers are steel fiber reinforced concrete, and the middle layer is ordinary concrete. To ensure the toughness of the road surface, we should pay attention to the use of steel fiber reinforced concrete. Doping steel fiber  into concrete will greatly increase the strength of concrete, so it is very important to use steel fiber reinforced concrete to pave the road.   2. Use steel fiber reinforced concrete to repair various kinds of damaged pavements   The use of steel fiber reinforced concrete  can also repair various kinds of damaged pavements. Usually, combination, separation ...

  1. The development of steel fiber reinforced concrete   In the 21st century, concrete is the most widely used bulk construction material in human society. Compared with other building materials, it has the characteristics of wide materials, simple technology, strong compliance, and convenient construction. However, concrete materials have shortcomings such as large shrinkage, high brittleness, easy cracking, and low fracture toughness, which restricts the further growth of concrete.   With the substantial improvement of the compressive strength of cement-based materials, how to increase the properties of cement-based materials such as crack resistance, impact resistance, tensile strength and ductility has becomes a concern to the engineering community. Now the international community basically believes that steel fiber reinforced concrete  is a useful measure to enhance the crack resistance and toughness of concrete.   Composite is an important way to improve ...

  Ⅰ. Maintenance of the steel fiber reinforced concrete   The steel fiber reinforced concrete is maintained, so that the mixture in the concrete has good hydration and conditions for hydrolysis strength development and the generation of shrinkage cracks can be prevented. The steel fiber reinforced concrete can be maintained by moisture. After the surface of steel fiber reinforced concrete is refurbished, it should be maintained immediately. Cover the surface of the concrete with 20 to 30mm thick wet sand, and sprinkle water evenly several times a day. The maintenance time of steel fiber reinforced concrete is determined by experiment, and the strength of concrete should reaches more than 80% of the 28d strength.   1. The moist maintenance method of steel fiber reinforced concrete of steel fiber company  is the most commonly used maintenance method. That is, 2 hours after the concrete is plastered, the surface has a certain strength, and it is covered with a wet sack ...

  There are many types of steel fiber products. According to the material, there are ordinary carbon steel fiber and stainless steel fiber. Among them, ordinary steel fiber is mostly used. According to the shape, there are long and straight, indented, wavy, hooked, big head and warp steel fibers. According to the cross-sectional shape, the steel fibers are divided into round, rectangular, crescent and irregular ones; according to the production process, the steel fibers are divided into cut type, shear type, milling type and melt extraction type; according to construction purpose, the steel fiber is divided into steel fibers for pouring and steel fibers for spraying.   Ⅰ. Application of steel fiber to the metallurgical industry   Application of steel fiber  in metallurgical industry: spray gun, dip tube, slag weir in refining outside the furnace; tundish cover and lining; electric furnace triangle area; furnace cover; iron ditch cover; torpedo tank; coke oven door; s...