Given the diverse forms of concrete buildings, steel fibers have been given more and more attention for its better performance of crack controlling and preventing deadly flaws. Unlike conventional wire mesh and rebar reinforcement, three dimensional reinforcement substantially improves the strength and durability.
Remix Steel Fiber Company has been developing the most suitable fibers for every customer. The projects in damp environment, especially in coastal areas, corrosion resistance should be given more attention. Generally speaking, common carbon steel is workable. But stainless steel fiber shows a better performance.
What is Steel Fiber Reinforced Concrete (SFRC)?
Steel fiber reinforced concrete is comprised of hydraulic cements, steel fibers and often plasticizer added to enhance mix performance. It is available in a variety of types and sizes and be used in diverse projects. However, SFRC can't deal with all purposes. It does great job in providing discrete, discontinuous reinforcement and effective crack control.
Why steel fiber optimum choice when crack propagation given great consideration?
Compared with conventional rebar and wire mesh, steel fibers reinforce in three dimensions throughout the entire concrete matrix. The fiber, which is similar to mini rebar, restrains micro-cracking effectively and lowers the possibility of major flaws.
What properties of the concrete are improved after using steel fibers?
Steel fiber reinforced concrete is a kind of uniform composite material. The big difference that the steel fibers create is that ductility and post-crack performance are significantly enhanced. In fact, mechanical properties of concrete matrix are mainly depended on the type and proportion of fibre used. Generally, smaller fibers with a high fibre count provide excellent first-crack strength and superior fatigue endurance.
When SFRC used, will it means zero rate of cracking?
Nothing can entirely eliminate cracking including steel fibers. At present, steel fibers are superior to controlling cracks and substantially reduce the odds of cracking. In addition, there are other several elements will affect the cracking, including design and installation practices.
Are all steel fibre slabs designed thinner? How much?
Slabs can be designed differently depending on types of load. If the critical load on the slab is static, the thickness of slab will equal to the concrete with conventional materials. However, if the static is dynamic, SFRC's advantages in improving fatigue resistance ensure a lower safety factor. So, under the same load carrying capacity, the slab can be as much as 25% thinner.
Round crimped steel fibers strengthen matrix anchorage and pull-out resistance to limit the crack expansion in all directions.
Melt extract stainless steel fibers are more pliable and ductile than stiff cut fibers. They are first choice for thermal shock resistance and mechanical shock resistance.
Hooked end steel fibers, manufactured by premium low carbon steel bar, have been proven ideal choice of preventing crack propagation for its 3D reinforcement.
Glued steel fibers are fabricated by cold-drawn low carbon steel wire which allows for preventing cracking propagation and long durability.