5.5. Field Considerations and Storage of Aggregates

Try these first

1. 1.

   What is segregation in the context of aggregate handling?

   Hint

   Think about how aggregates might separate during transport.

2. 2.

   Why is it important to store aggregates on hard and clean surfaces?

   Hint

   Consider what impurities can affect concrete.

3. 3.

   What is the main reason for keeping recycled aggregates separate from natural aggregates?

   • Avoiding color change
   • Preventing variable quality impacts
   • Cost reduction on materials

   Hint

   Think about how inconsistencies in material quality might impact concrete.

4. 4.

   True or False: Contamination of aggregates can improve concrete quality.

   • True
   • False

   Hint

   Consider what unclean materials mixed with aggregate could do.

5. 5.

   Consider a construction site where aggregates are kept on a muddy surface without any partitions. Outline the potential implications for concrete quality and suggest a change in practice.

   Hint

   Think about how contamination could specifically affect the strength and durability of concrete mixes.

6. 6.

   Imagine a scenario where aggregates are being continuously mixed with wet materials during transport. What are the consequences, and what measures should be implemented to address this?

   Hint

   Reflect on how changes in moisture can skew the water-cement ratio.