22.4. Summary

Try these first

1. 1.

   What are aggregates?

   Hint

   Think of common materials like sand and gravel.

2. 2.

   Why is aggregate strength important?

   Hint

   Consider what happens when heavy vehicles drive over a pavement.

3. 3.

   What is the primary role of aggregates in pavements?

   • Load transfer
   • Aesthetic appearance
   • Flexibility

   Hint

   Think about what happens when vehicles drive over.

4. 4.

   True or False: Aggregates need to be tested for physical properties before use.

   • True
   • False

   Hint

   Consider what could happen if you skip this step.

5. 5.

   Evaluate a scenario where low-quality aggregates are used in a pavement. What types of tests would you recommend to check their adequacy?

   Hint

   Consider which properties would be most critical for long-term performance.

6. 6.

   Discuss how environmental conditions might affect the choice and testing of aggregates.

   Hint

   Think about how aggregates behave in wet versus dry conditions.