14.1.2. Mechanisms of Weathering

Try these first

1. 1.

   What is oxidation?

   Hint

   Think about what happens when bitumen is exposed to air.

2. 2.

   What does UV radiation do to bitumen?

   Hint

   Consider the effects of light on other materials.

3. 3.

   What is the primary effect of oxidation on bituminous materials?

   • Increased ductility
   • Increased stiffness
   • Enhanced moisture resistance

   Hint

   Think about how air affects materials over time.

4. 4.

   If UV radiation causes bituminous materials to harden, what does this lead to?

   • True
   • False

   Hint

   Recall the effects of sunlight on other surfaces.

5. 5.

   Geographical regions experience different levels of weathering. How would you design a pavement mix in a tropical versus a cold climate?

   Hint

   Consider the specific weather conditions and their impacts on materials.

6. 6.

   Analyze a scenario where a pavement is showing signs of oxidation and cracking. What strategies would you implement to enhance its durability?

   Hint

   Think about how you can manipulate material properties and external conditions.