2.3. Pan Mixer

Try these first

1. 1.

   What is the primary function of a pan mixer?

   Hint

   Think about the characteristics of concrete that require special mixing techniques.

2. 2.

   Name one advantage of using scraper blades in a pan mixer.

   Hint

   What does sticking cause in any mixer?

3. 3.

   What is the main function of a pan mixer?

   • To bake concrete
   • To mix concrete
   • To transport concrete

   Hint

   Consider the primary purpose involved in construction processes.

4. 4.

   True or False: A planetary mixer has a fixed axis of rotation.

   • True
   • False

   Hint

   Think about how planets move in space.

5. 5.

   A construction site requires 200 cubic meters of concrete that needs to be mixed in increments of 25 cubic meters at a time using a pan mixer that has a nominal capacity of 2000 liters. Calculate how many batches must be mixed to achieve the required amount and the minimum mixing time is 10 minutes per batch.

   Hint

   Convert cubic meters to liters before working through the calculation.

6. 6.

   In a comparison study, a pan mixer produces concrete with a 15% higher efficiency compared to a traditional free fall mixer. If the free fall mixer produces 45 cubic meters per hour, calculate the output of the pan mixer.

   Hint

   Reflect on how efficiency percentages alter total output.