6.3.2. Importance

Try these first

1. 1.

   Define gradation in terms of aggregates.

   Hint

   Think about how the different sizes fit together.

2. 2.

   What is one benefit of proper gradation?

   Hint

   Consider how this affects stability.

3. 3.

   What is the main purpose of aggregate gradation in road construction?

   • To increase the weight of pavement
   • To ensure proper compaction and strength
   • To enhance color variations in asphalt

   Hint

   Think about how materials work together.

4. 4.

   True or False: Poor gradation can lead to increased voids in the pavement.

   • True
   • False

   Hint

   Consider what happens with bad fitting of sizes.

5. 5.

   Given a mix design for a concrete pavement, identify how varying aggregate gradation can influence the hydration process and strength over time.

   Hint

   Consider how uneven sizing can affect the water flow.

6. 6.

   Propose a testing method to assess the impact of aggregate gradation on the performance of an asphalt pavement under heavy vehicular traffic.

   Hint

   Think about practical applications and testing environments.