Created: 2024/05/05 11:08
Concrete mix design
It is process of preparation of concrete with suitable proportion of ingredients. Each ingredient consists of different properties.
Why concrete mix design
- To achieve specific strength characteristics.
- To meet required durability.
- To attain workability of fresh concrete.
What is characteristics strength
- Cube test.
- Not more than 5% of the test results are expected to fall below threshold.
- Compressive strength: -> ;
M for mix, 25 for 25 MPa compressive strength of that concrete. Usually increases with decrease of mixture ratio.
Notes
- Chemical reaction occurs between water and cement. Aggregates make the process faster.
Questions
- What is workability?
- What is durability?
- What is admixture?
- Improve workability.
- Faster strength gain.
- Where is Standard Concrete is used?
- Where is High Strength Concrete is used?
- What is 1:5:10?
- Cement, sand, and aggregates ratio. Or, Cement, fine aggregates, and coarse aggregates.