3.11. Use of Recycled Aggregates

Try these first

1. 1.

   What are recycled aggregates?

   Hint

   Think about where construction materials come from after they are no longer needed.

2. 2.

   Name one property of recycled aggregates.

   Hint

   Consider how aggregates interact with water.

3. 3.

   What are recycled aggregates primarily sourced from?

   • Mining
   • Ocean beds
   • Construction and demolition waste

   Hint

   Consider what happens to materials from demolished buildings.

4. 4.

   True or False: Recycled aggregates have a higher density than natural aggregates.

   • True
   • False

   Hint

   Think about the physical characteristics of recycled vs natural aggregates.

5. 5.

   Design a construction project that incorporates recycled aggregates and explain how you would manage their properties to ensure concrete quality.

   Hint

   Consider how to adjust water ratios based on aggregate properties.

6. 6.

   Evaluate the impact of using recycled aggregates on the lifecycle of a construction project.

   Hint

   Think about the long-term benefits for the environment and economy.