Generally Portland cement (GOST 10178 or GOST 31108).
Crushed stone or gravel (GOST 8267) and sand (GOST 8736). Water: Must meet GOST 23732 purity standards. 🔄 Status of Previous Versions gost 26633 2017 skachat pdf
Capacity to resist water pressure (e.g., W6, W8). Material Requirements: Generally Portland cement (GOST 10178 or GOST 31108)
If you are looking for older versions for historical or renovation projects: B25 (approx. M350)
Common classes include B15 (approx. M200), B25 (approx. M350), and B35 (approx. M450).