Bituminous Materials - Theory & Concepts

Properties of asphalt, emulsions, and cutbacks, and asphalt concrete mix design.

Adjust the temperature to observe how the asphalt binder viscosity changes. Viscosity dictates mixing and compaction properties.

Mixing Temperature135°C

Cool (60°C)Hot (180°C)

Optimal Range: For optimal aggregate coating, asphalt binder must reach a viscosity of approximately

1.7 \pm 0.2\text{ Poise}

(

170 \pm 20\text{ cSt}

Binder Curve: Viscosity (Poise) vs Temp (°C)

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Flow Rate

\eta = A \cdot e^{\frac{B}{T_{Kelvin}}}

\eta \approx 0.58 \text{ Poise}

Viscous Flow (Too Hot)

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