14.1.2.3. Thermal Effects

Try these first

1. 1.

   What happens to bitumen at high temperatures?

   Hint

   Think about the temperature and its effects on flexibility.

2. 2.

   Define thermal cracking.

   Hint

   Consider what happens to materials when they freeze and thaw.

3. 3.

   What effect does high temperature have on bitumen?

   • Increases ductility
   • Increases stiffness
   • Has no effect

   Hint

   Consider how heat can change material properties.

4. 4.

   True or False: Freeze-thaw cycles can cause thermal cracking.

   • True
   • False

   Hint

   Think about the weather and its effects on materials.

5. 5.

   Create a detailed plan for selecting materials for a road expected to experience high-temperature fluctuations. Include properties that are important to consider.

   Hint

   Focus on durability and temperature response.

6. 6.

   Evaluate the long-term impacts of high temperatures on flexible pavements in urban environments.

   Hint

   Think about the urban heat islands and how they affect pavement conditions.