FIELD: manufacture of building materials.
SUBSTANCE: invention relates to composition of complex additives and can find use in building material industry. Chemical additive contains 25-35% industrial-grade lignosulfonates, 20-30% sodium the balance., 0.5-1.5% trisodium phosphate, and sodium sulfate (the rest).
EFFECT: enhanced accuracy in earlier setting time and reduced consumption of chemical additive.
2 ex
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