Viscosity determination of asphalt at elevated temperatures using a rotational viscometer

ASTM D4402

Summary

ASTM D4402 measures the viscosity of asphalt and bitumen at elevated temperatures.

Test Details

The test method described in ASTM D4402 uses a rotational viscometer to measure a material’s resistance to rotation at a given temperature. Torque and speed measurements are recorded to calculate the viscosity of the bitumen sample. This data can be used to establish appropriate handling, mixing, and application temperatures for asphalt and bituminous materials. ASTM D4402 includes guidance for when materials exhibit non-Newtonian behavior and how this may affect field performance predictions.

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