| 摘要 |
building industry and building materials industry, more particularly preparation of additives to mortars and concretes in manufacturing reinforced concrete products and structures, using concretes having reduced strength and higher porosity. SUBSTANCE: complex additive comprises accelerator and plasticizer. Accelerator includes hydrochloric and formic acid salts, and plasticizer includes alcohols polyalcohols, ratios of components being as follows, wt: hydrochloric acid slats 30-90; polyalcohols, 8- 24; formic acid salts, 4-10; hydrochloric acid salt includes sodium and calcium formate, and polyalcohols are pentaerythrite and glycerol. EFFECT: accelerated strength in early period, gain in strength after 23 days and night of hardening under normal conditions. 4 cl, 2 tbl |
