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The fast and simple way to perform your SCB tests

Meets TP124 (I-FIT), ASTM D8044 (LSU method) and IDEAL-CT (TTI Method) ASTM D8225

InstroTek’s Auto_SCB is a precise and versatile device for conducting mechanical testing of asphalt mixtures at a fraction of the cost. Able to run various versions of Semi-Circular Bend (SCB) test, Auto_SCB helps pavement designers and maintenance practitioners predict the cracking potential, performance, and ductility of asphalt mixtures.

The extremely universal and automatic Auto_SCB is capable of running several other performance tests with user-friendly programmable features. The touch screen display and intuitive controls allow for rapidly setting new test parameters and monitoring test data in real time. Auto_SCB can accommodate a wide range of test accessories to run asphalt performance tests such as IDT strength and IDT creep compliance and is able to operate in load-control and displacement-control modes.

Now Engineers and Researchers alike have a new and cost-effective tool for improving the performance of asphalt mixtures.

Illinois Flexibility Index Software - I-FIT

Asphalt Testing:

  • SCB (IFIT and LSU Methods)
  • DIRECT SHEAR on asphalt interlayers


  • SCB Compatible Test Fixture
  • Color touchscreen display 320 x 240 pixels
  • 8 analog A/D inputs, for load, displacement, etc.
  • Fully automatic test process with real-time acquisition and a graph of load/displacement or load or deformation versus time curve
  • Removable memory capable of storing 1,000s of tests


  • Meets AASHTO TP105, IL (I-Fit) and LSU standards
  • Touch screen display with easy-to-use controls
  • Rapid test parameter settings & monitoring data in real time
  • Operates in load-control and displacement-control modes
  • Capable of connecting to multiple transducers simultaneously
  • Repeatable and accurate test results
130kg (300lbs)
145cm (57")
Foot Print:
50cm W x 45cm D (20" W x 18" D)
Power: :
110/120V (220V optional)
Max Compression:
50kN (11,000lbs)
Max Tension:
25kN (5,600lbs)
Ram Speed:
0.01 to 51 mm/min (0.0004 to 2.0 in/min)
Ram Travel:
100 mm (4")
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