What is M20 Concrete?
Grade: M20 (Mix ratio 1:1.5:3)
- Cement : Sand : Aggregate = 1 : 1.5 : 3
- Compressive Strength = 20 N/mm² after 28 days
- Water-Cement Ratio ≈ 0.5
- Uses: Residential slabs, beams, columns, footings
- Characteristic strength: 20 MPa
At Harshinii Builders, we use M20 grade RCC for all structural members – exactly as shown in our construction videos.
| Property | Value |
|---|---|
| Slump Value | 50-100 mm |
| Max Aggregate Size | 20 mm |
| Cement Grade | OPC 53 or PPC |
| Curing Period | Minimum 14 days |