3.2. Guidelines from IS 4925

Try these first

1. 1.

   What is the primary function of a spiral blade in a concrete mixer?

   Hint

   Think about how materials need to move.

2. 2.

   What type of mixer relies on gravity to mix materials?

   Hint

   It's the type that uses a particular natural force.

3. 3.

   What type of mixer operates by gravity?

   • Power Mixer
   • Free Fall Mixer
   • Pan Mixer

   Hint

   Remember the mixers that use weight to work.

4. 4.

   True or False: Power mixers can handle low slump mixes.

   • True
   • False

   Hint

   Think about the capability of power mixers.

5. 5.

   Consider a situation where you have a non-tilting reversible drum mixer and your initial mixes consistently have less paste. How would you address this issue based on the section's content?

   Hint

   Reflect on how to prepare the mixer before using it for actual batches.

6. 6.

   You are tasked to mix concrete for a stiff structure using a free fall mixer. Given its limitations, what adjustments would you recommend if you notice a slump below 50mm?

   Hint

   Think about the capabilities of different mixer types.