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Grading of concrete
Grading of concrete with the ratio of cement sand and broken stone.
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| Concrete is a composite material composed of water, coarse granular material (the fine and coarse aggregate or filler) embedded in a hard matrix of material (the cement or binder) that fills the space among the aggregate particles and glues them together.Rdcconcrete | |
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| Grade of concrete | Crushing or characteristic strength at 28 days |
| M10=1:3:6 | 100 kg/cm2=10 N/mm2 |
| M15=1:2:4 | 150 kg/cm2=15 N/mm2 |
| M20=1:1.5:3 | 200 kg/cm2=20 N/mm2 |
| M25=1:1:2 | 250 kg/cm2=25 N/mm2 |
- cement
