Ready-mixed concrete class B20 (M250)
Concrete M250 or B20 has an even wider scope, both in private and general construction. This brand of heavy concrete is a passable one in terms of its characteristics and is more often used in the construction of an armored belt, ceilings and as a footing for heavy foundations and airfield roads.
| Characteristics | Meaning |
| Average strength: | 262 kgf/cm2 or 25 N/mm2 |
| Average density: | 2350 kg/m³ |
| Frost resistance: | F100-F200 |
| Mobility: | P1-P5 |
| Waterproof: | W2-W8 |
| GOST: | 7473-2010 |
To obtain 1 m³, class B20, you must:
- cement – 332 kg;
- river sand 2-2.5 (medium, fine) – 750 kg;
- crushed stone – 1.08 tons;
- purified water – 215 liters;
- chemical additives that increase the operational properties of the material (increase the density, simplify the molding of the product, reduce water consumption). Their volume is not more than 5% of the total volume.
Recommended for construction:
- landscape construction
- pillow roles: “footings”
- the role of the asphalt pavement cushion
- filler roles, cavities
- ground reinforcement
- pouring roofs
- private construction
- general construction
