3. Guidelines for Successful Pumping

Try these first

1. 1.

   What is the purpose of the lubricating process?

   Hint

   Think about friction and flow!

2. 2.

   What should be the maximum size of the aggregate for pumping?

   Hint

   Consider the pipeline size!

3. 3.

   What is the maximum size of aggregates for effective concrete pumping?

   • 10 mm
   • 20 mm
   • 25 mm

   Hint

   Consider the diameter of the pump pipeline.

4. 4.

   True or False: A slump of 200 mm is acceptable for pumping concrete.

   • True
   • False

   Hint

   Think about the workability impact on pumping.

5. 5.

   Given a construction plan for a large concrete pour using lightweight aggregates, how would you adapt your pumping strategy?

   Hint

   Consider how water absorption affects your mix.

6. 6.

   Analyze why using aluminum pipelines for concrete pumping might be problematic.

   Hint

   Think about the chemical interactions during the pumping process.