Physical Testing 

Physical Testing is a kind of testing that is generally conducted in the fields of engineering and for quality assurance. It is a testing procedure that uses qualitative and quantitative techniques. The process is used to determine the physical properties of a component. It is a requirement in areas where the quality of material matters highly. It determines whether a manufacturer has followed the specifications and regulations in terms of producing material or not. 

There are different kinds of physical testing. These depend on the areas, the material being tested, and so on. Some of the most common physical testing procedures include structural testing, wear, and corrosion testing, fire protection testing, packaging performance test, and so on.

TMT Bars or Thermo Mechanically Treated Bars are used for reinforcement. Generally, the concrete structures aren’t capable enough to withstand extreme pressure, and they lack tensile strength, which makes them susceptible to destruction during natural disasters during earthquakes.  Reinforcement bars, specifically TMT Bars, are used to give the concrete the missing tensile strength. Now, the quality of the TMT bars reflects in the overall quality of the structure it is used to build. If the TMT bar is of a high standard, the built structure would last for a really long time.

It is, therefore, crucial to not just use great quality TMT bars, but also to use the ones that have gone through excruciating physical testing.To determine whether the TMT bars are of high quality, they need to undergo three kinds of physical testing procedures. These processes are tensile test, yield stress test, and bend and rebend test. The tensile strength test is carried out by performing a simple calculation. 

This is only valid in the case of reinforcement bars that have a capacity of 32 mm. For reinforcement bars of higher capacity, Universal Testing Machine is used. The tensile test is carried out to measure the strength of reinforcement bars. Yield test, on the other hand, is carried out to test how much stress TMT bars can take. To conduct the test, a line is projected through the initial elastic region. 

The process continues until the bar reaches its yield point. Finally, the bend and rebend stress test is carried out to determine the limit up to which the bar can be bent without causing any deformation. Depending on the size of the TMT bars, the test process varied.