5.2. Operating Principles of Internal Vibrators

Try these first

1. 1.

   What is the primary purpose of using internal vibrators?

   Hint

   Think about the mixing process.

2. 2.

   Name one type of internal vibrator.

   Hint

   Remember the common names used in the industry.

3. 3.

   What is one primary function of internal vibrators?

   • Increase air pressure
   • Reduce viscosity
   • Add more water

   Hint

   Think about how we improve mix flow.

4. 4.

   True or False: Over-vibrating can improve the strength of concrete.

   • True
   • False

   Hint

   Consider the relationship between vibration and concrete integrity.

5. 5.

   A construction site is using a 40mm diameter vibrator. What is the recommended maximum spacing for insertions during consolidation?

   Hint

   Use the multiplier of 1.5 to compute the insertion spacing.

6. 6.

   During a project, it was noted that the team over-vibrated the concrete mix. Discuss how this might affect the layers of aggregates within the mixture.

   Hint

   Consider how different components behave under excessive movement.