Summary
It is most commonly used in bridges, dams, roads and buildings. Common material properties tests include tensile test, bending test and hardness test. The results of these tests are used to ensure that these products meet the material specifications and classification requirements.

Concrete usually has high compressive (push) strength, while tensile (pull) strength is generally weak. Therefore, steel bars are formed and embedded in concrete to enhance its tensile strength. Most reinforcing bars are threaded reinforcing bars, which form threads in the production process to enhance their adhesion to concrete. It is most commonly used in bridges, dams, roads and buildings. Common material properties tests include tensile test, bending test and hardness test. The results of these tests are used to ensure that these products meet the material specifications and classification requirements.

Bend
Steel bars are bent into different shapes to enhance the strength of the structure on the coagulation. In order to prove that the material can bend without obvious strength loss, three-point bending test can be used as a quality control inspection method to ensure the formability of the bar. This test usually requires bending the sample along the bending center to 90 degrees or 180 angles and checking whether there are cracks on its surface. The international standards stipulate the relevant requirements of the diameter, bending angle and support span of the backup roll.

Solution
A series of steel bending fixtures are provided. These fixtures are equipped with adjustable support spans and replaceable bending centers, so that a single fixture can be used to test various sizes of steel bars. Bending fixture can be installed in any standard universal material testing machine and manufactured in accordance with international standards. Simple bending tests can also be carried out on the InStrong tester for complex steel bar tension tests.

Stretching
The steel bar samples are often severely fractured under high loads (accompanied by a large recoil force). This kind of accident will bring problems to the fragile test machine. In addition, it is difficult to clamp the irregular steel surface because the teeth of the clamping surface are initially clamped on the protrusion of the specimen. Without an appropriate fixture surface, the specimen can easily slide out of the clamp surface. When strain data are required for yield and modulus characteristics, specimen sliding will greatly affect the test results and pass/fail criteria. The irregular surface of reinforcement also increases the difficulty of obtaining continuous and accurate strain data. Unlike the processed specimens, because of the irregular surface of the steel bar, it is necessary to extend the gauge (average elongation strain on the long gauge) for testing.

Solution
A series of standard large-load single-test space and double-test space testing machines adopt a variety of different beams and fixtures in the design, providing a user-friendly solution for testing heavy large-scale steel bar samples. A series of V-grooves are provided for steel bar test.