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Generally, fibers include steel fiber, glass fiber, glass fibers, synthetic fibers and natural fibers. Each fiber has they own superior performance in different fields. But steel fiber is a new fiber-reinforced concrete used in industry. In some specific circumstances, steel fiber is completely instead of steel rebars in concrete.
Why choose the steel fiber?
In contract to rebar, steel fibers makes difference in controlling cracks, lowering the possibility of maintenance and saving your budget.
How steel fibres save your time and MONEY?
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Widely use of steel fiber
The quantity of steel fiber in concrete
The amount of steel fiber added to concrete is a called "volume fraction" (Vf). The volume fracture ranges from 0.1% to 0.3%. The use of steel fiber is a small quantity thus it is very cost-effective.
Based on the advantage above, steel fiber is an ideal industrial product for purchasers.
For indoor applications such as tunnels and warehouses, no. For outdoor applications such as pavements some minor rusting may occur. experience in highways and industrial pavements indicate that while individual fibers corrode at the surface, staining of the concrete surface does not occur. overall aesthetics and serviceability are maintained even with the presence of individual fiber corrosion. indoor Applications- Surface fibers in typical indoor tunnels or manufacturing floor applications remain bright and shiny under normal environmental conditions.
Outdoor Applications Without cracks- experience has shown that concrete specified with a 28-day compressive strength over psi, mixed with standard water/cement ratios, and installed with methods that provide good compaction, limit the corrosion of fibers to the surface skin of the concrete. When surface fibers corrode, there is no propagation of the corrosion more than 0.008 beneath the surface. Since the fibers are short, discontinuous, and rarely touch each other, there is no continuous path for stray or induced currents between different areas of the concrete. outdoor Applications With cracks-laboratory and field-testing of cracked SFrc in environments containing chlorides has indicated that the cracks in concrete can lead to corrosion of the fibers passing across the crack. However, small cracks (crack widths < 0.008) do not allow corrosion of steel fibers passing across the crack. if the cracks wider than 0.008 and are limited in depth, the consequences of this localized corrosion are not structurally significant.
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