14.5.1.2. Cracking

Try these first

1. 1.

   What primary environmental factor contributes to thermal cracking?

   Hint

   Think about changes in hot and cold weather.

2. 2.

   What happens to bitumen when it oxidizes?

   Hint

   Consider the role of oxygen.

3. 3.

   What is the primary cause of thermal cracking in bituminous materials?

   • A) High Traffic
   • B) Temperature Fluctuation
   • C) Moisture

   Hint

   Think about the effect of seasons on material performance.

4. 4.

   Cracking is less likely to occur in warm climates compared to cold ones. True or False?

   • True
   • False

   Hint

   Reflect on how temperature affects materials differently.

5. 5.

   Design a laboratory test that could simulate the effects of thermal cracking on a bituminous sample over time. Outline the steps involved.

   Hint

   Consider how real-world conditions would simulate wear on a sample.

6. 6.

   Given a case study in a tropical climate, assess how environmental factors differ from those in a cold climate regarding crack formation in pavements.

   Hint

   Think about how different climates expose materials to different stresses.