25.3. Aggregate gradation

Try these first

1. 1.

   What is aggregate gradation?

   Hint

   Think about how the sizes of aggregates relate.

2. 2.

   Why is density important in asphalt mixtures?

   Hint

   Consider the impact of weight in materials.

3. 3.

   What is the main purpose of effective aggregate gradation?

   • To maximize void space
   • To achieve maximum density
   • To minimize particle size

   Hint

   Remember the relationship between density and stability.

4. 4.

   True or False: Some void space is necessary in a bituminous mix.

   • True
   • False

   Hint

   Consider the role of binder materials.

5. 5.

   Suppose you have a mixture with a gradation that is too coarse. How could this affect the performance of the paving?

   Hint

   Think about how well the materials fit together.

6. 6.

   Given the aggregate sizes, create a mixed design approach for a specific pavement project. What considerations will affect your choice?

   Hint

   Remember the practical applications discussed during our sessions.