GOST 8269.1-1997 Mauntainous rock road-metal and gravel, industrial waste products for construction works. Methods chemical analysis*, 1997-12-22 Update
GOST 25818-1991 history
2017GOST 25818-2017 Thermal plant fly-ashes for concretes. Specifications
1991GOST 25818-1991 Thermal plant fly-ashes for concretes. Specifications