24.4. Summary

Try these first

1. 1.

   What are the main characteristics of a bituminous mix?

   Hint

   Think about what qualities a pavement needs to withstand traffic.

2. 2.

   Name a common coarse aggregate used in bituminous mixes.

   Hint

   Recall the materials that provide compressive and shear strength.

3. 3.

   What is the primary purpose of stability in a bituminous mix?

   • To allow flexibility
   • To resist deformation under load
   • To enhance workability

   Hint

   Consider what happens when heavy vehicles drive over the mix.

4. 4.

   True or False: An open-graded mix lacks fine aggregates.

   • True
   • False

   Hint

   Think about the purpose of such mixtures.

5. 5.

   Given the functional requirements of a high-traffic roadway, design a suitable bituminous mix, discussing the reasoning for each selected component.

   Hint

   Consider the properties required for heavy traffic.

6. 6.

   Identify potential failures in a pavement system when using an inappropriate mix design, and suggest corrective measures.

   Hint

   Think about real-world challenges and how they can be fixed.