PRODUCT DESCRIPTION
Steel fibers have different types according to their cross-sectional shape, which include circular steel fibers, rectangular steel fibers, semicircular steel fibers, and fibers with irregular or variable sections in length. Also, these fibers can be straight or curved with different dimensions. To describe this parameter, a factor called aspect ratio is used. This parameter is the result of dividing the length by the diameter (if the cross-section is not circular, the diameter of the circle equivalent to the desired cross-section can be calculated). Also, these fibers are available in two forms: hooked steel fibers and sinusoidal steel fibers. Its hooked and sinusoidal type is much better than its simple type and creates a lot of conflict in concrete. In terms of quality and quantity, it improves more properties of SFRC concrete.
Features
- Increased tensile strength
- Increased energy absorption and impact resistance
- Increased resistance to fatigue and rupture strain
- Increased resistance to thermal stress and shrinkage
- Increasing shear, bending and compressive strength
- Saving time, money and materials
- Increased malleability or ductility
Applications
- Reinforcement of concrete floor of factories
- Bridges and highways
- Dams and hydraulic structures
- Railway structures
- Port construction projects and marine structures
- Tunneling and mining
Packaging
- In 10-20 kgs bags
Colour
- Copper
- Gray
technical specifications
Equivalent diameter |
0.8-1.2 mm |
tensile strength |
1050MPa |
Fiber length |
30-50 mm |
appearance |
Bright and clean wire |
Fiber type |
Sinusoidal and hooked fibers |
The mix design of steel fiber reinforced concrete or SFRC is the same as the mix design of conventional concrete; with the difference that in order to achieve proper efficiency and maximum use of steel fibers, the proportions must be changed. This problem may be satisfied by changing the maximum aggregate size, changing the percentage of cement or adding fly ash. According to the relationships presented in ACI 544.4R-2, the design process of steel fiber reinforced concrete or SFRC can be categorized as follows: the flexural strength of normal concrete behavior is calculated until the first crack; But in concretes reinforced with steel fibers or SFRC concrete, the strength of concrete increases slightly compared to its resistance at the first crack; Therefore: f_d=f_ct (1 R_(e,3)/100) f_d=f_ct f_(e,3) in these relationships: f_d=flexural capacity f_ct=initial cracking resistance f_(e,3)=P_(e, 3)*L/(bh^2 ) R_(e,3)=f_(e,3)/f_ct *100 h,b= depth and width of the section. P_(e,3)=L/150 is the average amount of load that changes the shape of the beam to the amount of compressive strength observed experimentally. By adding steel fibers to concrete, its compressive strength is increased as follows. F_f=F_c (1 K_1 P)=F_c*α which in the above relation: F_f= compressive strength of concrete reinforced with steel fibers F_c= compressive strength of concrete without fibers K_1= experimental constant 0.123 P= volumetric percentage of steel fibers α= coefficient magnification
technical documents
Photo Gallery
Technical documentation request
Be the first to review “Steel Fiber”