17.3.2. Aggregates

Try these first

1. 1.

   What are the two types of aggregates used in concrete?

   Hint

   Think about the size difference.

2. 2.

   Name one property that coarse aggregates should have.

   Hint

   Consider their shape and cleanliness.

3. 3.

   What type of aggregates are typically used in the concrete mix for pavements?

   • Coarse and Fine
   • Only Coarse
   • Only Fine

   Hint

   Think about the mix requirements for concrete.

4. 4.

   True or False: The grading of aggregates does not affect the strength of concrete.

   • True
   • False

   Hint

   Consider how aggregates fit in the mix.

5. 5.

   Design a concrete mix for a pavement using specific aggregate sizes that minimize voids. Describe your grading strategy.

   Hint

   Consider optimizing the sizes to achieve minimal voids.

6. 6.

   Discuss the impact of using recycled aggregates in concrete pavements regarding strength and environmental implications.

   Hint

   Reflect on the balance between strength and sustainability.