Complete Physical Test Of Deformed Steel Bars (Tension / Bending Test)

PNS49 is the Philippine National Standard for deformed steel bars used in reinforced concrete structures. This standard outlines the physical testing requirements for deformed steel bars, including tension and bending tests.

The tension test involves applying a tensile load to a deformed steel bar until it fractures. The test is used to determine the strength and ductility of the steel bar. The test is performed on a sample of the deformed steel bar that has been cut to a specific length and has had the ends prepared for testing. The sample is loaded into a testing machine and subjected to an increasing tensile load until it fractures. The load and elongation of the sample are recorded throughout the test, and the ultimate tensile strength and elongation at fracture are calculated.

The bending test involves bending a deformed steel bar to a specific angle without fracturing it. The test is used to determine the bending properties of the steel bar, including its ductility and ability to withstand bending loads. The test is performed on a sample of the deformed steel bar that has been cut to a specific length and has had the ends prepared for testing. The sample is loaded into a bending machine and bent to a specific angle without fracturing. The load and angle of the sample are recorded throughout the test, and the yield strength and ductility of the steel bar are calculated.

Both the tension and bending tests are essential for ensuring the quality and safety of reinforced concrete structures. By performing these tests on deformed steel bars, it is possible to determine their strength and ductility, which are critical properties for ensuring the integrity of concrete structures.

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