14.1.2.2. Ultraviolet (UV) Radiation

Try these first

1. 1.

   What does UV radiation do to bituminous materials?

   Hint

   Think about the effects of sunlight on materials.

2. 2.

   Name one mechanism of weathering.

   Hint

   Remember, this involves a reaction with oxygen.

3. 3.

   What is the primary effect of UV radiation on bituminous materials?

   • Increases flexibility
   • Causes brittleness
   • Improves adhesion

   Hint

   Think about what happens to materials under intense sunlight.

4. 4.

   True or False: Only UV radiation affects the durability of bituminous materials.

   • True
   • False

   Hint

   Consider all weathering mechanisms.

5. 5.

   Discuss how increasing UV exposure can alter the maintenance strategies for public roads in sunny climates.

   Hint

   Consider how you would address the increased wear caused by environmental factors.

6. 6.

   Design a pavement structure for a city with high UV radiation ensuring durability over time, detailing the materials and design choices.

   Hint

   Think about materials that might enhance UV resilience and design strategies that minimize exposure.