3.2. Important Parameters for Pumpability

Try these first

1. 1.

   What is the purpose of the lubrication process before pumping?

   Hint

   Think about what lubrication does for machinery.

2. 2.

   What should be done immediately after pumping concrete?

   Hint

   Consider what happens if concrete hardens in the pump.

3. 3.

   Why is lubrication essential before pumping concrete?

   • To cool the pump
   • To facilitate smooth flow
   • To minimize cost

   Hint

   Consider what lubrication does for machinery.

4. 4.

   Is it important to clean the pump immediately after pumping? (True/False)

   • True
   • False

   Hint

   Think about consequences of hardening in the pump.

5. 5.

   A construction team forgot to lubricate the pump before pumping concrete. Discuss the potential consequences this could lead to.

   Hint

   Consider what lubrication prevents in mechanical operations.

6. 6.

   Analyze the effects of using an aggregate size of 30mm in a pumping operation meant for 20mm aggregates. What could happen?

   Hint

   What happens when larger particles pass through a smaller opening?