Flexibility is an important factor that plays a role in the construction of every building structure. This TMT bar property is crucial as it helps buildings to withstand the sudden impact of extra load/stress or the shock effects of environmental disasters. Flexibility and elongation allow the TMT rebars to bend easily without breaking as well as possess the ability to be easily modified into any shape or size in line with the construction requirements. Anything might happen without the TMT bars developing any cracks or deformities. This is why builders procure them from the leading TMT bar dealers for their construction activities, especially in areas affected by high seismic activity.
If you explore the different types of steel bars available on the market, TMT bars are the most flexible option with high tensile strength. Moreover, they also have fire-resistance and corrosion-resistance properties.
Why are the TMT Bars So Flexible?
TMT bars are manufactured using a mechanical thermal treatment process. It involves the molten steel going through compression, then getting rolled through heat-treatment and water quenching process. The heating and cooling at various temperatures create the final TMT bar structure. It is then cooled to room temperature and sent to TMT bar dealers for storage or delivery.
During the quenching process, the hot-rolled TMT bar is cooled in a quenching box in a controlled environment. A special water system is used for this to ensure that only the surface of the bar is cooled while the core part retains heat. It allows the TMT steel bar to undergo self-tempering by supplying heat to the surface. Due to this tempering, the outer layer of the bar hardens and forms a martensite structure. On the other hand, the core of the steel bar (its inner surface) remains soft and austenitic. Due to this difference in the structure of the TMT bar, its tensile strength, ductility, and elongation factor increase by a lot. It allows them to withstand high-stress load-bearing capacity in large-scale structures like dams, skyscrapers, or flyovers. This is the reason developers order TMT bars from the leading TMT bar dealers for construction.
In the final process, the TMT bar is passed through special cooling beds where the core of the bar gets transformed into a ferrite-pearlite-crystal structure, offering high ductility. As the surface of the TMT bars is free from defects, they are much better at handling torsional stress. They are also highly corrosion-resistant along with having high flexibility. The TMT bar distributors provide these bars when someone needs to construct buildings in earthquake-prone areas.
Flexibility Test for TMT Bars:
When you explore the inventory of the TMT bar distributors, ask them if the TMT bars they provide have undergone the ‘Bending and Re-bending’ test. Under this test, the sample TMT bar is bent to 135o and kept in boiling water for about 30 minutes. Later it is re-bent to approximately 157.5o. The purpose of the test is to ensure that the TMT bars are designed for the right amount of strength and flexibility, should be able to bend without any appearance of surface cracks along their contours.
Flexibility Application in Construction:
During construction: After you check the TMT steel rod prices in Ranchi and order them for your building project, the bars are then resized, bent, and shaped to suit the construction requirements. Here the flexibility property of TMT bars shines as the construction crew can bend them without much effort. It consumes less manpower and work-time while the overall construction work speed is also increased. Thus, the construction progresses on its schedule with efficiency.
After construction: TMT bars are used to lay the foundation of the building and also make the pillars, beams, columns, etc. When an external force is applied to the building structure, the flexible characteristics of TMT bars allow it to bend to absorb the force and then return to the original shape. The flexibility of TMT bars also gives them the extra elongation factor without compromising the measurement of the bars. For more elongation, the bars can be bent and re-bend up to 180o without any harm to the TMT bars. You should check the TMT steel rod prices in Ranchi before procuring such flexible bars for your construction project.
The flexibility of TMT bars is critical as it helps buildings to handle the extra load, stress, and damage from natural calamities. The TMT bar manufacturers make sure that their products retain some flexibility along with strength. It helps to increase the durability and longevity of buildings made using flexible TMT bars.