Ready-mixed concrete class B30 (M400)
Concrete M400 or B30 is more specific concrete due to its properties. It is mainly used for frost-resistant, water-resistant foundations and foundations, for pouring load-bearing structures of relatively heavy structures, and is also used in subway tunnels, flyovers, bridges with a small load.
| Characteristics | Meaning |
| Average strength: | 393 kgf/cm2 or 36 N/mm2 |
| Average density: | 2310 kg/m³ |
| Frost resistance: | F200-F300 |
| Подвижность: | P3-P4-P5 |
| Waterproof: | W6-W12 |
| GOST: | 7473-2010 |
To obtain 1 m³, class B30, you must:
- portland cement M400 (M500) with quality certificates – 420 kg;
- pure river sand of large fractions – 770 kg;
- crushed stone (fractions 5-20 mm) – 1.08 tons;
- pure water, free from acids, alkalis, etc. – 155 liters;
- to improve the technical characteristics of BST, chemical additives are introduced.
Recommended for construction:
- frost-resistant foundations
- waterproof foundations
- subway tunnels
- underground structures
- swimming pools/water parks
- pouring load-bearing reinforced concrete structures basin
- pillows under the road (with a high load)
- road tunnels
- road / railway bridges
- auto racks
- airfields (upper layer)
