23.3. Requirements of Bitumen

Try these first

1. 1.

   What is temperature susceptibility in bitumen?

   Hint

   Think about how things change in heat or cold.

2. 2.

   Why is viscosity important for bitumen?

   Hint

   Consider what happens if a mixture is too thick or too thin.

3. 3.

   What is the main reason for ensuring bitumen's stability in temperature?

   • To prevent cracking
   • To increase viscosity
   • To improve adhesion

   Hint

   Think about the consequences of soft or brittle pavement.

4. 4.

   True or False: Bitumen should have a high temperature susceptibility.

   • True
   • False

   Hint

   Remember our discussion on stability.

5. 5.

   If a new type of aggregate is introduced that doesn't bond well with bitumen, how would that impact the long-term integrity of the pavement?

   Hint

   Consider how bonding affects the physical properties of a mixture.

6. 6.

   Design a testing protocol for evaluating the temperature susceptibility of different bitumen types.

   Hint

   Think of key terms we've learned related to testing methods and desired outcomes.