Tata Tiscon 550 SD 16 MM TMT Rebar

What is TMT Rebar?

TMT stands for Thermo Mechanically Treated bars they are high-strength reinforcement bars that have a tough outer core and a soft inner core. TMT rebars are best known for exceptional strength, durability, bendability, weldability, ductility, earthquake-resistance, corrosion-resistance, and fire-resistance properties. TMT bars provide better reinforcement to any concrete structure and are ideal for all types of construction. Branded and Genuine TMT Rebars are available to to buy online at NirmaanKart Ranchi.

Why TMT Rebar is important in building house?

A home is only built once in a lifetime, requiring years of savings. But, as you build it, you want it to be strong and pure as well as beautiful. A strong and pure home necessitates a similarly strong and pure foundation, a dependable spine, and an intact framework. All of this can only be imparted by a quality TMT rebar during the construction phase of your home, NOT later.

Plain concrete does not make for a very excellent structural member on its own since it is quite weak in tension despite being robust in compression. But if you reinforce it with TMT Rebar, which has the appropriate strength in tension, ductility, and bond properties, it makes building incredibly string compare to home without TMT rebar.

Concrete, which is by nature an extremely brittle material, gains ductility from the steel reinforcement of TMT Rebar. In terms of application, if an ideal reinforced concrete member were to fail in tension, the ductility of the bars would ensure that such a failure is preceded by a visibly large deformation, giving the occupants plenty of time and warning ahead of the impending collapse.

What role TMT Rebar plays in event of earthquake?

To understand how, let us understand how a ductile material is different from a brittle one. Take 2 TMT bars of equal length & same cross-section area. Bar 1 - made of ductile material. Bar 2 - made of brittle material. Now, pull(ref. fig below) the two bars by applying a force(tensile) at the ends. Bar 1(ductile) elongates by a larger amount before it fractures, while Bar 2(brittle) breaks suddenly on fractional elongation.

During an earthquake, a very high amount of energy is imparted on a structure. A structure made of a ductile material would absorb a much higher proportion of energy/impulsive stress, before fracturing, compared to a brittle one. Another important fact to note is, amongst the 3 most important materials i.e steel, brick and concrete, used in constructing a house, only steel can provide ductility to the structure.

How to judge the quality of TMT Rebar in Ranchi?

The following are important and critical parameters which can be used to judge the quality of a TMT bar:

1. Raw material used for producing TMT rebar
2. Consistent quality along the length of TMT rebar
3. Bonding with cement (Rib pattern)
4. Lower impurities like Sulphur, phosphorus
5. Necessary ductility
6. Ease of application i.e bendability
7. Transparent pricing of TMT Rebar in Ranchi

What is life span of TMT Rebars?

Thanks to their anti-corrosion and anti-rusting properties, TMT steel bars are known to have a longer life span than regular steel bars. The exact life span of the TMT steel depends on the quality of construction, the materials used, construction style, and many other factors.

How to test the TMT Rebars at home?

Bend Test- Bend the bar at 180° & observe the behavior of the rebar. 

The result- It should not crack or rupture.

Rebend Test- Bend the bar at 135° & observe the behavior of the rebar. Place it in 100°C hot water for 30 mins. Then bend at 157.5° & observe the behavior of the rebar.

The result- The bar must bend without any crack formation.

What are is Physical and Chemical Properties of TMT Rebar Grades in Ranchi

Higher levels of Sulphur and Phosphorus i.e impurities introduces brittleness in a TMT rebar which in turn also impacts the fatigue resistance of a TMT rebar. Also high Sulphur content enhances corrosion of TMT bar which is detrimental to quality.