7.2.5. Shape and Texture

Try these first

1. 1.

   What are the two main types of aggregate shapes?

   Hint

   Look for the basics in the section.

2. 2.

   How does texture affect bonding?

   Hint

   Think about what properties allow aggregates to stick better.

3. 3.

   Which type of aggregate shape is typically better for achieving stability in pavements?

   • Rounded
   • Angular
   • Flaky

   Hint

   Think about how the shapes interact with each other.

4. 4.

   True or False: Rough textured aggregates hinder bonding with binders.

   • True
   • False

   Hint

   Reflect on the properties discussed.

5. 5.

   You are designing a pavement for a high-traffic highway. Discuss your choice of aggregate shape and texture, explaining the reasoning behind your selection.

   Hint

   Consider the nature of the load and traffic when choosing aggregates.

6. 6.

   Evaluate a scenario where flaky aggregates are used in a pavement. Propose alternative aggregate types to enhance performance.

   Hint

   What properties do angular aggregates provide compared to flaky ones?