4.2. Techniques of Placing

Try these first

1. 1.

   What is segregation in concrete?

   Hint

   Think about the mixing of different mix components.

2. 2.

   Name one method for placing concrete manually.

   Hint

   This method relies on human effort.

3. 3.

   What is the main reason to prevent segregation in concrete?

   • A. Affects appearance
   • B. Reduces strength
   • C. Increases cost

   Hint

   Think about how the mix components come together.

4. 4.

   True or False: Chutes can only be used for horizontal placements.

   • True
   • False

   Hint

   Consider the versatility of equipment.

5. 5.

   Given a construction site facing high wind speeds, what strategies would you employ to successfully place concrete?

   Hint

   Consider environmental controls.

6. 6.

   How would you design a night-time concrete pour in a congested urban area while avoiding cold joints?

   Hint

   Think about logistical constraints and solutions.