3.3. Aggregates

Try these first

1. 1.

   What are the two main types of aggregates in concrete?

   Hint

   Think of their size difference.

2. 2.

   What is filling ability in SCC?

   Hint

   It relates to how concrete behaves under its weight.

3. 3.

   What is the primary function of coarse aggregates in concrete?

   • A) Provide volume
   • B) Enhance color
   • C) Reduce weight

   Hint

   Think about the main purpose in construction.

4. 4.

   True or False: Fine aggregates are always larger than coarse aggregates.

   • True
   • False

   Hint

   Consider the definitions both types.

5. 5.

   Design a concrete mix for SCC using aggregates that achieve minimum segregation and maximum flowability. Describe the properties and grading you'd select.

   Hint

   Think about how grading can affect flow.

6. 6.

   Critically analyze how the choice of aggregates can influence the durability of SCC in marine environments.

   Hint

   Consider environmental exposure when selecting aggregates.