7.2.1. Strength

Try these first

1. 1.

   What is the importance of aggregate strength in road construction?

   Hint

   Think about the loads applied on a road.

2. 2.

   Name a test used to assess the strength of aggregates.

   Hint

   What test quantifies the resistance to crushing?

3. 3.

   What does the Aggregate Crushing Test measure?

   • Durability
   • Impact resistance
   • Crushing strength

   Hint

   Think about the loads aggregates experience on the road.

4. 4.

   True or False: The toughness of an aggregate is unrelated to its strength.

   • True
   • False

   Hint

   Consider the roles of both properties in road conditions.

5. 5.

   You are designing a road that will handle heavy truck traffic. Discuss how you would choose aggregates and what properties are critical.

   Hint

   Consider both compression and impact factors.

6. 6.

   How would weak aggregates affect the long-term maintenance of a newly constructed road?

   Hint

   Think about how traffic stresses aggregates over time.