1. Lubricating Process

Try these first

1. 1.

   What is the purpose of the lubricating process in concrete pumping?

   Hint

   Think about what happens before the actual pumping.

2. 2.

   Name a component of the mortar grout.

   Hint

   What two materials do we mix for the grout?

3. 3.

   What is the primary function of the lubricating process?

   • To prevent hardening of concrete
   • To allow easier pumping of concrete
   • To mix cement with water

   Hint

   Focus on what the lubrication directly impacts during the pumping operation.

4. 4.

   True or False: The lubricating process must be done after the concrete pumping.

   • True
   • False

   Hint

   Recall the sequence of events during pumping.

5. 5.

   Propose a solution for effectively cleaning a concrete pump that has experienced hardened concrete left in the lines.

   Hint

   Think about cleaning methods outlined in the lubricating process.

6. 6.

   Evaluate the efficiencies of using various types of aggregates on the pumpability of concrete.

   Hint

   Connect how aggregate size affects overall concrete characteristics.