Tensile testing on Steel Reinforcing bar (Rebars)

ASTM A370, ISO 10180, ISO 15630, DIN 488, JIS G3112

ASTM A370, ISO 10180, ISO 15630, DIN 488, JIS G3112

Reinforced steel and ribbed reinforcement bars are essential for civil engineering 

Since concrete has a high compressive strength but a lower tensile strength, it is reinforced with the incorporated steel.  The reinforcement bars are usually produced with a diameter ranging from 5 mm to 60 mm. The smaller diameters are then further worked to create grids or lattices before they are drowned in the concrete.  

Some of the most common include ASTM A370, ISO 15630 (..), and ACI 318. These standards include testing requirement that are specific to determining rebar tensile and bend properties.

Typical results include:

  • Yield Point (ReH, Drop of Beam, Zero Slope)
  • Proof Strength or Offset Yield Strength (Rp0.2, 0.2% Offset Yield)
  • Tensile Strength (Rm)
  • Elongation at Maximum Force (Ag, Agt)
  • Elongation after Fracture (A)

Static material testing machines are available in a wide range of standard load capacities, generally from 250 kN to 1200 kN. Load cells and advanced control electronics provide force accuracies of +/- 0.5% from 0.2% to 100% of system capacity. 

Wedge grips provide proper clamping force to prevent slippage while also reducing the chance for grip-induced failures. Extensometers, manual Clip On or automatic, attach to the uneven surface with enough force to prevent slippage during testing when scale can fall from the specimen surface. Grip covers provide additional shielding to mechanical grip components. Graphwork SoftWare provides pre-built test methods with necessary calculation results ensuring standard compliance and repeatable test results.

Most of the Quasar series of static testers can be configured for bend and re-bend testing.

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