FIELD: concrete mixes including superdiluting additive for concrete operations. SUBSTANCE: concrete mix includes portland cement, fillers and superdiluting additive-reaction product of steam cracking at 90-120 C for 0.5-3 h of oil raw material with liquid or gaseous sulfuric anhydride at their molar ratio of (0.66- 1.45):1, respectively, with subsequent removal of sulfur dioxide. Water-to-portland cement mass ratio is (0.43-0.45):1; portland cement-to- fillers mass ratio is 1:5, and amount of superdiluting additive, as calculated for organic sulfonate, amounts to 0.69-1.4% of portland cement mass. Workability of concrete mix is increased by 35% as compared with reference one, and compression strength is up to 488 kg/sq.cm. EFFECT: higher efficiency. 1 tbl
