5.1.A.2. Coarse Aggregates

Try these first

1. 1.

   What are coarse aggregates?

   Hint

   Think of the bigger components in concrete.

2. 2.

   Name two types of coarse aggregates.

   Hint

   Consider their sources.

3. 3.

   What is the primary purpose of coarse aggregates in concrete?

   • Provide strength
   • Aesthetic value
   • Color variance

   Hint

   Think of their role in holding up structures.

4. 4.

   Grading of coarse aggregates is essential for which aspect?

   • True
   • False

   Hint

   Remember the benefits of reducing voids.

5. 5.

   Calculate the specific gravity of an aggregate sample weighing 200 kg in water and 120 kg in air.

   Hint

   Recall the specific gravity formula.

6. 6.

   Analyze how the use of recycled aggregates might affect the concrete mix's properties and discuss potential adjustments necessary.

   Hint

   Consider how moisture levels might change.