24.3.3. Flexibility

Try these first

1. 1.

   What does flexibility in a bituminous mix refer to?

   Hint

   Think about how pavements react under traffic load.

2. 2.

   List one factor that can cause brittleness in a binder.

   Hint

   Consider what happens to materials over time.

3. 3.

   What is the primary benefit of flexibility in bituminous mixes?

   • Prevents cracking
   • Increases weight
   • Reduces strength

   Hint

   Recall what flexibility helps guard against.

4. 4.

   True or False: Increased bitumen content decreases flexibility.

   • True
   • False

   Hint

   Think about how materials behave with more binding agents.

5. 5.

   Assess how variations in temperature can affect the flexibility of different types of bituminous mixes.

   Hint

   Consider the physical state of materials at varying temperatures.

6. 6.

   Evaluate the cost implications of designing a less flexible pavement versus a flexible pavement.

   Hint

   Think about long-term maintenance versus initial costs.