24.3.5. Workability

Try these first

1. 1.

   What is workability in bituminous mix design?

   Hint

   Think about how easy it is to handle the materials.

2. 2.

   Name one factor that affects the workability of a mix.

   Hint

   Consider the materials used in the mix.

3. 3.

   What factor primarily affects the workability of a bituminous mix?

   • Aggregate gradation
   • Temperature
   • Traffic load

   Hint

   Consider the sizes of the particles used in the mix.

4. 4.

   True or False: Higher bitumen content always improves workability.

   • True
   • False

   Hint

   Think about the consequences of too much fluidity.

5. 5.

   You are tasked with designing a bituminous mix with a high level of workability. What specific gradation of aggregates would you choose and why?

   Hint

   Think about how size distributions interact.

6. 6.

   In an experiment, you found that increasing the angularity of aggregates leads to a drop in workability. Propose a solution to mitigate this issue.

   Hint

   Reflect on the mix composition and the types of aggregates.