Measures cycles of freezing and thawing (e.g., F100, F200).
Generally Portland cement (GOST 10178 or GOST 31108). gost 26633 2017 skachat pdf
Capacity to resist water pressure (e.g., W6, W8). Material Requirements: Measures cycles of freezing and thawing (e
Common classes include B15 (approx. M200), B25 (approx. M350), and B35 (approx. M450). B25 (approx. M350)
You can download the full text from the Moscow Government Portal (PDF) .
GOST 26633-2015 establishes requirements for concrete mixture composition, strength, and durability.
Heavy concrete must fall within 1800–2500 kg/m³ .