Chemical additive for cement concretes and building mortars. RU patent 2284973.

FIELD: manufacture of building materials.

SUBSTANCE: additive suitable for use in cement concretes and building mortars contains, wt %: sodium chloride 60.0-75.0, potassium sulfate 0.001-0.012, calcium sulfate 0.005-0.025, magnesium sulfate 0.001-0.012, and balancing amount of industrial-grade lignosulfonates with content of reducing substances no higher than 8%. Amount of additive needed to be added is lower by 0.3-0.5% based on the weight of cement.

EFFECT: reduced labor expenditures and power consumption, simplified transportation, increased strength of concrete and building mortar with additive of invention in early curing periods.

9 ex

IPC classes for russian patent Chemical additive for cement concretes and building mortars. RU patent 2284973. (RU 2284973):

C04B24/18 - Lignin sulfonic acid or derivatives thereof, e.g. sulfite lye

C04B22/08 - Acids or salts thereof

C04B103/10 - 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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