Asphalt Mix Design

Asphalt Mix Design Testing is an effective means of analyzing compacted asphalt samples to measure the load and flow rate (stress and strain) for performance assessment. Asphalt samples are tested to determine durability and strength, as well as resistance to fatigue, deformation, cracking, moisture damage, and many other factors.

Asphalt Mix Design Testing equipment from Karol-Warner provides options for determining strength characteristics in various configurations on lab and field compacted samples.

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• Load Frames are available for a wide variety of testing operations. The following models are suited for use in Marshall, Lottman, Semi-Circular Bend (SCB), and Tack Shear testing:
  
  • 7690 Load Frame, 2in / min, 10,000lbf
  • 7691 Load Frame, 0.02 - 2in / min, 10,000lbf
  • 7790 Load Frame, 2in / min, 20,000lbf
• Marshall Data Acquisition Software records specimen information and real-time test data, calculates results, then prepares reports following ASTM requirements. Additional components are required for operation.
• Load & Displacement Measurement components used with Load Frames include Readouts, Load Cells, Load Rings, and Displacement Transducers. Digital and analog Dial Indicators are used to measure and, in some cases, record data when evaluating asphalt samples.
• Strength Testing Fixtures are used in Karol-Warner and other manufacturer’s Load Frames to determine shear strength, moisture sensitivity, low temperature cracking, intermediate temperature cracking, and tack coat bond or interlayer shear strength of asphalt specimens.
• Sample Ejectors are used to remove samples from 4in (102mm) or 6in (152mm) Marshall Molds.