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Complex additive for preparation of concrete (versions). RU patent 2378207.

FIELD: construction.

SUBSTANCE: invention is related to construction materials, in particular to compositions of complex additives for preparation of concrete. Complex additive contains the following components, wt %: technical lignosulfonates - LST - 3.5-3.9, sodium nitrite - 16.0-16.9, mineralised drains - waste of refining production of nonferrous metals, including sodium and calcium chlorides - 31.0-33.8, water - the rest. In version additive includes the following components, wt %: superplasticiser C-3 2.5-3.0, sodium nitrite 16.0-16.9, specified mineralised drains - 31.2-34.3, water - the rest.

EFFECT: accelerated development of strength in process of hardening under normall conditions, at negative temperature and under conditions of heat and moisture treatment, increased strength of concrete, and also reduction of concrete cost.

2 cl, 2 tbl

IPC classes for russian patent Complex additive for preparation of concrete (versions). RU patent 2378207. (RU 2378207):

C04B24/24 - Macromolecular compounds (C04B0024140000 takes precedence;macromolecular compounds comprising sulfonate or sulfate groups C04B0024160000)

C04B22/12 - containing halogen in the anion, e.g. calcium chloride

C04B103/60 - LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS (devitrified glass-ceramics C03C0010000000); REFRACTORIES (alloys based on refractory metals C22C); TREATMENT OF NATURAL STONE

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