👉the order of adding materials into the mixer DOES have an effect on the concrete quality

✅ Correct order (recommended)

1st Coarse aggregate (stone)
2nd Some water
3rd Sand
4th Cement
then The Remaining water

🏷This gives the best mixing efficiency and uniform strength.

❌For Example If you add in this order:
1. Sand → 2. Cement → 3. Aggregate

⚡️It can cause these problems:

⏺1. Cement sticks to sand (balling) Sand and cement form lumps also Harder to coat all aggregates.

⏺2. Poor coating of aggregate :-Cement paste won’t cover all stones properly.
Concrete becomes weak and non-uniform.

⏺3. Longer mixing time needed

⏺Mixer struggles to break cement–sand lumps.

⏺4. More dust and loss of fine materials

⏺Cement may blow out before water is added.

⭐ Conclusion

⚡️Mixing sand + cement first, then aggregate is not recommended.

⏺It will reduce workability, can reduce strength, and may require extra mixing time.

@etconp