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The term TMT means “Thermo Mechanically Treated”. TMT bars are known to have a softer core and a solid external surface. These are resistant to corrosion and are used especially for industrial establishments, bridges, residential buildings and all kinds of concrete reinforcement. As compared to standard TOR steel bars, TMT Bars happen to be much superior due to their varied engineering properties. TMT bars, all in all, come with high corrosion resistance and strength. This makes it possible for engineers to develop structures that would have been unimaginable before. Know about 4 common types of TMT bars.

FBEC Rebars (Fusion Bonded Epoxy Coating)

These are made by clinging epoxy powder with a hot bar with the help of electrostatic charges. The epoxy powder first melts and then cools in order to yield a properly adhered uniform coating. The layer offers protection against corrosion to rebar. This is very practicable for protecting against chloride ion.

CRS (Corrosion Resistance Steel) Rebars

The bars are made by the blending of various elements such as Phosphorus, Chromium and Copper. These are the most effective rebars for offering protection to superstructures against severe weather conditions. As compared to a standard TMT bar, a Cu-Cr TMT rebar boasts of 1.5 – 1.9 times more corrosion resistance. Every element is able to offer resistance to corrosion in an individual way.

Zinc Coated TMT BarsThe process of galvanization helps deposit zinc on a rebar. Ion transfer is responsible for the deposition of the layer of zinc on the metal surface. Coating serves as a physical barrier between the rebar and the source of corrosion. Even when the layer suffers a break, the surrounding zinc atoms dissolute and offer greater protection to the bar. Using Zinc coated bars is advantageous in the sense that there is no loss of flexibility, and bars can be roughly handled or even bent with convenience.

TMT Re-bars with Corrosion Inhibiting AdmixtureWhen the condition of the soil is normal and there are no excess sulphates or chloride, these rebars can be implemented in the substructures. Engineers can use it in the superstructures along with concrete in a soft ambience, apart from the coastal regions with constant snow or heavy rains. There is also a Bipolar Concrete Penetrating Corrosion Inhibiting Admixture added into the concrete. Although this does not serve as a barrier, it can retard the corrosion process as much as to make it negligible.

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