22.2.4. Shape of aggregates

Try these first

1. 1.

   What are the common shapes of aggregates?

   Hint

   Think about the different classifications of shapes discussed.

2. 2.

   Why should flaky aggregates be avoided?

   Hint

   Consider their performance compared to other shapes.

3. 3.

   Which type of aggregate shape is least desirable for strength?

   • Cubical
   • Flaky
   • Angular

   Hint

   Think about the performance of different shaped aggregates.

4. 4.

   True or False: Angular aggregates are typically preferred for pavement construction.

   • True
   • False

   Hint

   Recall which shapes enhance performance.

5. 5.

   Design a pavement mix for a low-traffic area and a high-traffic area using different aggregate shapes. Describe your rationale.

   Hint

   Consider how the volume and frequency of traffic can affect aggregate performance.

6. 6.

   Evaluate a situation where flaky aggregates were used in a sidewalk. Discuss the potential long-term impacts.

   Hint

   Think about how the choice of aggregate would affect daily wear and the sidewalk's appearance over time.