cnsteelfiber

. Steel fiber is a new kind of steel fiber with high-performance Steel fiber is a new kind of steel fiber with high-performance. The design method of the mix ratio of steel fiber roads is basically the same as that of ordinary concrete, but the differences are: double control standards of strength (compressive strength and flexural tensile strength); steel fiber content is determined according to the flexural tensile strength required by the design; unit water consumption and sand percentage are related to the fiber content. For every 0.5% (volume rate) steel fiber, the unit water consumption increases by 6kg and the sand percentage increases by 2%. steel fiber reinforced concrete has the same mixing, operation and construction performance as ordinary concrete. The fiber will not be spheroidized in the concrete and is evenly distributed, which can be produced in a commercial concrete mixing station and can be used for pumping construction. The early slump loss of milled steel fiber r...

Introduction of hooked end steel fiber The length of hooked end steel fiber refers to the linear distance between the two ends of the fiber, expressed in Lf, and its length can be 15 ~ 60mm. The diameter or equivalent diameter of the fiber cross-section (when the steel fiber has a non-circular cross-section, its cross-sectional area is equivalent to the diameter of the circular cross-sectional area.) is expressed in df, and its length can be 0.3 to 1.2 mm. The aspect ratio of the fiber refers to the ratio of the length of the steel fiber to the diameter or equivalent diameter, that is, Lf/df, which is usually 30-100. The volume ratio of the hooked end steel fiber refers to the percentage of the fiber concrete volume occupied by the steel fiber, expressed in pf, which indicates how much steel fiber is incorporated in the mixture. 2.Which functions of concrete can be enhanced by the hooked end steel fiber As the damage of concrete mainly due to the pulling out of the fiber instead of ...

Ⅰ. What is steel fiber concrete Steel fiber reinforced concrete is a new type of composite material with excellent performance and wide application. Steel fibers are usually randomly distributed in the concrete or cement mortar matrix in the form of short fibers. As steel fiber retards the expansion of cracks in the base concrete, its tensile, flexural, and shear strength are significantly improved compared to ordinary concrete, and its impact resistance, fatigue resistance, post-cracking toughness and durability are also greatly improved. In the past 20 years, a lot of researches have been done on the mechanical and structural properties of steel fiber concrete at home and abroad, and the fiber has been used in various projects such as roads, bridges, tunnels, water conservancy, ocean, construction and refractory structures. Ⅱ. The shape of steel fiber concrete The general steel fiber produced are: straight shape, hooked shape, wave shape, concave and convex shape, pressed prism...

Steel fibers are short and thin fibers that are made of steel materials through a certain process and can be randomly distributed in concrete or mortar. According to the process type, it is divided into 5 categories, which are steel wire cold drawn type, steel plate shear type, steel ingot milling type, steel wire scraping type and melt extraction type. According to the shape, it is divided into straight type and special type. According to the molding method, it is divided into a bonded row type and a single bulk type. Steel fiber directly replaces the steel bars in traditional concrete, reduces the amount of steel and concrete, and improves the concrete's compression, impact, crack resistance, impermeability and wear resistance. 1. The development and status quo of the world steel fiber material industry The development of steel fiber has a history of 100 years. At present, the global output reaches hundreds of thousands of tons. Many developed countries have large-scale produ...

Ⅰ. Steel fiber can effectively solve the problem of wear-resisting floor cracking In the use of wear-resisting floor, there will be different degrees of surface cracking phenomenon due to various factors, which will affect the integrity and strength of the floor. For cracked wear-resisting floors, what we need is to know why the floor cracked and how to solve it. Steel fiber can effectively solve the cracking problem of wear-resisting floor. 1. Reasons for wear-resisting floor cracking (1) During the construction of the wear-resisting floor, uneven mixing of materials and wrong mixing ratio will makes the concrete structure insufficient in strength, and finally cause the wear-resisting surface to crack under the action of internal pressure. (2) When the floor is divided into grids, if the spacing is too large, and if there is a lack of management in the process of vibrating the concrete, vibration will appear to be uncompacted. (3) The wear-resisting surface layer is not suffici...

1. The application of steel fiber reinforced concrete in water conservancy projects steel fiber reinforced concrete (SFRC) is widely used in water conservancy projects provided by steel fiber supplier . 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 th...

Steel fiber reinforced concrete (SFRC) is a new type of composite material that can be casted and sprayed up by mixing an appropriate amount of short steel fiber to normal concrete. In recent years SFRC has developed rapidly at home and abroad. 1.The properties of steel fiber reinforced concrete Compared with normal concrete, steel fiber reinforced concrete has far better resistance to tensile, shear, bending, abrasion and crack, and its fracture toughness and impact resistance also have been greatly enhanced, which lead to better performance in fatigue resistance and durability of the structure in its adoption. It is to be noted that, the toughness of SFTC can be increased by 10 to 20 times. A comparative test on the mechanical properties of steel fiber reinforced concrete and normal concrete has been conducted in China. The result indicates that when the admixing quantity of steel fiber account for 15%-20% and the water-cement ratio is 0.45, the tensile strength will increase by...

1. Steel fiber concrete materials Steel fiber reinforced concrete is a new type of high-strength composite material composed of a certain number of short and thin steel fibers mixed with ordinary concrete. Because steel fiber retards the generation of cracks in the matrix concrete, it not only has the excellent properties of ordinary concrete, but also has good flexural resistance, impact resistance, fatigue resistance, low shrinkage, good toughness, and strong wear resistance. The thickness of the road surface can be reduced by more than 50%, and the distance between the shrinkage joints can be increased to 15m-30m, without the need for expansion joints and longitudinal joints. Steel fiber reinforced concrete has round and straight, melt-drawn and shear steel fiber types. Its length is divided into various specifications, the best aspect ratio is 40-70, the cross-sectional diameter is in the range of 0.4mm-0.7mm, and the tensile strength is not less than 380MPa. During construction,...