12.1.1. Elastic, Viscous, and Viscoelastic Behavior

Try these first

1. 1.

   What type of behavior do bituminous mixes show at low temperatures?

   Hint

   Think about materials that bounce back.

2. 2.

   What happens to bituminous mixes at high temperatures?

   Hint

   Consider how a thick syrup behaves when heated.

3. 3.

   What is elastic behavior in bituminous mixes?

   • Deformation is permanent
   • Deformation is recoverable
   • Deformation increases over time

   Hint

   Remember how a rubber band works.

4. 4.

   True or False: Viscous behavior occurs at low temperatures.

   • True
   • False

   Hint

   Think about how heat affects liquids.

5. 5.

   Illustrate how temperature fluctuations throughout the day could affect the performance of a pavement made from bituminous mixes. Consider both daytime and nighttime conditions.

   Hint

   Think about how morning and afternoon temperatures change and the effects on materials.

6. 6.

   Design a simple experiment to measure the recoverable deformation of a bituminous mix under controlled temperatures and loading rates.

   Hint

   Consider equipment available in labs to test different mixes.