24. Bituminous mix design

Try these first

1. 1.

   What materials are included in a bituminous mix?

   Hint

   Think about the components that create road surfaces.

2. 2.

   What is the primary role of fillers in a bituminous mix?

   Hint

   What improves adhesion in the mix?

3. 3.

   What is the primary purpose of bituminous mix design?

   • To determine traffic load capacities
   • To find proportions of constituents for durable mixes
   • To estimate construction costs

   Hint

   Focus on the durability and workability aspects.

4. 4.

   True or False: Flexibility in a bituminous mix helps prevent cracking under high traffic loads.

   • True
   • False

   Hint

   Consider what happens when a surface bends.

5. 5.

   Design a bituminous mix suitable for a region with extreme temperature fluctuations. Discuss the components and their proportions.

   Hint

   Consider how temperature affects materials.

6. 6.

   Evaluate the impact of higher air voids in a bituminous mix. What are the potential advantages and disadvantages?

   Hint

   Think about balancing performance with pavement longevity.