6.2.2. Based on Size

Try these first

1. 1.

   What size defines coarse aggregates?

   Hint

   Think about the sieve size.

2. 2.

   What is the purpose of fine aggregates?

   Hint

   Consider why we need small particles in a large mix.

3. 3.

   What size of aggregates is classified as coarse aggregates?

   • Smaller than 4.75 mm
   • Larger than 4.75 mm
   • Exact 4.75 mm

   Hint

   Remember the size range specified in the text.

4. 4.

   True or False: Fine aggregates are essential for creating a smooth consistency in asphalt mixes.

   • True
   • False

   Hint

   Think about the role of small aggregates.

5. 5.

   A contractor needs to decide on the appropriate aggregate type for a new highway project. Discuss how the choice between coarse aggregates and fine aggregates will affect road performance.

   Hint

   Consider the roles of each aggregate type.

6. 6.

   You have two aggregate mixes for a project: one predominantly coarse and one with a balanced mix of coarse and fine aggregates. Predict the potential outcomes regarding durability and performance.

   Hint

   Think about how aggregates interact.