23.4.5. Viscosity test

Try these first

1. 1.

   Define viscosity.

   Hint

   Think about how some liquids flow quicker than others.

2. 2.

   What device is used to measure viscosity?

   Hint

   It's an instrument related to time and flow.

3. 3.

   What does viscosity measure in bitumen?

   • Color
   • Resistance to flow
   • Composition

   Hint

   Think about what happens when you pour different liquids.

4. 4.

   True or False: Higher temperatures increase the viscosity of bitumen.

   • True
   • False

   Hint

   Consider what happens when you heat syrup.

5. 5.

   You are tasked with comparing two different brands of bitumen. One has a viscosity of 50 seconds, while the other has a viscosity of 40 seconds at the same temperature. Discuss the implications on choice for road construction.

   Hint

   Analyze how each value impacts construction efficiency.

6. 6.

   During a paving project in a colder climate, describe adjustments you would recommend if the viscosity of the bitumen is too low. What methods would you suggest to enhance its performance?

   Hint

   Think about enhancing thickness and stability.