Fast-setting shrink-resistant compound for repair of concrete, road, airdromes pavements and bridge floors. RU patent 2362752.

FIELD: chemistry.

SUBSTANCE: invention refers to the field of construction and can be used to repair concrete pavements of the roads and airdromes airstrips. The compound contains phosphate magnesium binding material, microfiber, filler (sand or ballast stone) and water with the following composition of phosphate magnesium binding material (wt %) magnesium oxide - 25-35, monosubstituted ammonia phosphate and/or monosubstituted sodium phosphate -15-25, sodium polyphosphate- 1-30 (in relation to the mass of the said monosubstituted phosphates), chamot - 35-50, cellulose or basalt microfiber and additionally the sodium tetraborate and/or boric acid with following component content in relation to the mass of the said binder (wt %): the said microfiber - 0-7.0, the said filler -0-150, water - 0.1-0.2, sodium tetraborate and/or boric acid - 0.3-7.0.

EFFECT: enhancing of performance of the concrete pavements, namely in the absence of roughness in the repaired area

7 cl, 7 ex

IPC classes for russian patent Fast-setting shrink-resistant compound for repair of concrete, road, airdromes pavements and bridge floors. RU patent 2362752. (RU 2362752):

C04B28/30 - containing magnesium cements (magnesium oxide cements C04B0028100000)

C04B111/72 - 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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