| 摘要 |
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 |
