13.2. Objectives of Bituminous Mix Design

Try these first

1. 1.

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

   Hint

   Think about how a pavement responds to traffic.

2. 2.

   Define durability in the context of bituminous mixtures.

   Hint

   Consider factors like water and weather.

3. 3.

   What is the main goal of ensuring stability in a bituminous mix?

   • To enhance elasticity
   • To resist deformation
   • To reduce costs

   Hint

   Consider how the mix behaves under stress.

4. 4.

   True or False: A mix with high void content is always better.

   • True
   • False

   Hint

   Think about the balance needed for performance.

5. 5.

   Design a bituminous mix that achieves high stability and low voids. How will this affect the performance?

   Hint

   Consider how stability interacts with void content.

6. 6.

   Assume a mix fails a durability test. What modifications would you propose to improve its resistance to environmental factors?

   Hint

   Think about materials that can improve the mix's ability to withstand water and oxidation.