About the Steel Fiber

 Steel Fiber Reinforced Concrete (SFRC) is a composite material consisting of steel fibers and cement-based matrix.This type of concrete has higher tensile strength, flexural strength and fatigue resistance than traditional concrete. It is also more resistant to cracking, spalling and impact damage. SFRC can be used in a variety of applications, such as structural columns, foundations, parking garages, and industrial floors. Additionally, it can be used to reinforce precast and cast-in-place concrete structures. With its increased strength and durability, SFRC is becoming an increasingly popular choice in construction. Micro Stainless Melt Extract Steel Fiber | Wholesale Factory Price | China Manufacturer HOT SALE HARVEST Melt Extract Steel Fiber Reinforced Cement Fiber Polypropylene Fiber | Wholesale Factory Price | China Manufacturer fiber can improve the reinforcement of mortar or concrete performance effectively to make them strong and protect the projects Glued Steel Fiber for Concrete Reinforcement | Cooper Coated Steel Fiber | Wholesale Factory Price | China Manufacturer High carbon steel wire, low carbon steel wire, galvanized wire, stainless steel wire and other metal wires Slit sheet steel fiber for concrete reinforcement used in industrial | Wholesale Factory Price | China Manufacturer higher strength and toughness.It has better high-temperature strength and high-temperature corrosive character.

The basic shape of corrugated steel fibers is similar to that of shear products, but the tensile strength of single fibers has been greatly improved, reaching more than 1100 Mpa, which is suitable for key projects and large areas of concrete crack resistance parts. Today, the corrugated steel fiber manufacturer, Longyu Steel Fiber, Suzhou, has a brief talk with you about the use of corrugated steel fibers.1. Doping amount: 0.5-2% volume, that is, 30-120 kg/m3 (or according to the actual situation).2. Material requirements: steel fiber reinforced concrete shall not use sea water or sea sand, and chloride salt shall be strictly prohibited.3. Mixing: The workability of steel fiber reinforced concrete can be determined by referring to the slump required for ordinary concrete in similar projects, and the mixing time can be appropriately prolonged to ensure the uniform dispersion of steel fiber.4. Maintenance: The construction and maintenance technology of concrete with fibers is identical to that of concrete without fibers.5. Safety in use: Proper attention should be paid to labor protection to prevent stabbing and splashing of eyes; Micro Stainless Melt Extract Steel Fiber | Wholesale Factory Price | China Manufacturer HOT SALE HARVEST Melt Extract Steel Fiber Reinforced Cement Fiber Polypropylene Fiber | Wholesale Factory Price | China Manufacturer fiber can improve the reinforcement of mortar or concrete performance effectively to make them strong and protect the projects Glued Steel Fiber for Concrete Reinforcement | Cooper Coated Steel Fiber | Wholesale Factory Price | China Manufacturer High carbon steel wire, low carbon steel wire, galvanized wire, stainless steel wire and other metal wires Slit sheet steel fiber for concrete reinforcement used in industrial | Wholesale Factory Price | China Manufacturer higher strength and toughness.It has better high-temperature strength and high-temperature corrosive character.

Steel Fibre Reinforced Concrete (SFRC) gives concrete its highperformance because the steel fibers are homogeneously distributed. Thus,contributing to considerable increase in load-bearing capacity, high durabilityand high impact resistance, and all this ensures a longer lifetime with lowmaintenance cost. Apart from a wide usage, the Steel Fibers are also used assprayed concrete (shotcreting), slope stabilization, pre-cast concreteproduction tunnel and mining shafts and underwater concrete reinforcement.Steel Fibres are also popularly used in manufacturing precast walls, overlays,manhole covers, piles & pillars.

Steel fiber reinforced concrete pavement is a kind of cement concrete pavement. The pavement is paved with concrete mixed with a certain amount of dispersive short steel fibers. The tensile strength of steel fiber reinforced concrete is much higher than that of plain concrete, and its compressive strength, fatigue resistance and crack resistance are also improved.

Steel fiber concrete compresses the construction schedule, allows for alternative construction methods or design solutions and increases durability. When a project is delivered quicker with fewer efforts and labor, the higher costs of the steel fibers are overcompensated by the savings.In certain applications the volume weight of steelfibers is lower as the rebar for a similar reinforcing effect. For those applications the cost/reinforcement is lower for steelfibers.

Mechanically anchored steel fibers have been proven as reinforcement, even for structural application. Steel fibers are made from a material with well known engineering properties; e modulus, Poisson’s ratio, tensile strength and creep. the e-modulus of steel is greater than that of concrete. thus, the steel fibers pick up the stresses quickly and affect the cracking process immediately. the long term load carrying capacity of the steel fiber reinforced concrete is significant. Steel fibers have a material specification of AStM A820. Macro synthetic fibers come in a large variety and have very different material properties. Macro synthetic fibers do not have a material specification in AStM. All macro synthetic fibers do have an e-modulus lower then that of concrete and relatively low tensile strengths. thus, macro synthetic fibers need a certain crack width to occur prior to being able to engage in the concrete and then only moderate post crack strength values can be achieved. Macro synthetic fibers are also subject to creep which makes the long term loading capacity of the fiber lower or non existent. the rate of creep can be increased with increased ambient temperatures.There are at least four factors to review when considering reinforcement; Modulus of elasticity, Poisson’s ratio, tensile strength and creep.

Not more than concrete.

The residual flexural strength is equal to the post crack flexural strength of steel fiber concrete corresponding to a certain deflection in a beam bending test. it is a value from testing which has been introduced for the design of steel fiber concrete.

The residual flexural strength is equal to the post crack flexural strength of steel fiber concrete corresponding to a certain deflection in a beam bending test. it is a value from testing which has been introduced for the design of steel fiber concrete.

The post crack strength of steel fiber concrete is a material property which is commonly used to differentiate fiber performance. this will typically be determined with a bending test and is often referred to as the residual flexural strength (see below). For the same concrete composition, steel fiber performance is a function of fiber length, diameter, aspect ratio, anchorage and tensile strength. A fiber dosage alone has no performance related value at all. AStM international has two flexural testing procedures for fiber reinforced concrete. the two testing procedures are AStM c1399 Standard test Method for obtaining Average residual-Strength of Fiber-reinforced concrete and AStM c1609 Standard test Method for Flexural Performance of Fiber-reinforced concrete. bekaert propose the use of AStM c1609. AStM c1399 can lead to inflated post crack flexural strengths due to favorable fiber orientation and the use of a steel plate to control the first crack’s energy release.

No, with good jobsite safety practices in place steel fibers shall not impose any safety concerns. Please refer to our safety data sheets for further information.

Typical steel fiber reinforced concrete contains less than 0.5% vol. steel fibers and hardly more than 0.75% vol. those fibers are discontinuous and not connected to each other. tests only show a slight decrease in electrical resistivity due to the addition of steel fibers. However, the resistance to current flow is still substantial. effects from moisture content and aggregate composition are much more dominant than the addition of steel fibers.

No failures of the plastic liner due to fiber punctures have ever been identified. the abrasion from sharp aggregates during placement of the concrete poses just as big of a threat to the liner as do the steel fibers. After placement the fibers tend to move around and re-orient themselves during vibration which relieves any pressure of an individual fiber on the liner created during placement. Many projects using SFrc are constructed with cast-in-place and sprayed shotcrete directly in contact with water proof membranes.

For cast insitu, internal vibration is the most used option to consolidate the concrete. Form vibration is generally used in the precast industry.When steel fiber concrete is cast into form work a small amount of vibration of the forms helps keep the fibers from touching the forms and thereby from being visible when the forms are removed. For example, during casting of steel fiber reinforced precast structures, the forms are vibrated to consolidate the concrete. this action results in an almost fiber free surface of the structures. So allowing a short period of form vibration in the all cast-in-place structures, in addition to internal vibration where possible, will provide the best finished surface.