COMPOSITION FOR IMPREGNATION OF CONCRETE Russian patent published in 1994 - IPC

FIELD: production of building materials. SUBSTANCE: the composition for the impregnation of concrete comprises (wt % ): 45.45-51.25 still residues formed during organic synthesis of polyvinyl pyrolidone from aminoaldehyde resin-based fatty heterocyclic stock; 0.164-0.200 30% aqueous hydrogen peroxide; 0.520-0.700 25% aqueous ammonia; 4.79-9.00 liquid glass; and water, the balance. The concrete impregnation is not greater than 18 mm, the water impermeability is not more than 6, the water absorption is not more than 2.28% . The resistance coefficient after 13-month treatment with 10% Na₂SO₄ is 1.11. EFFECT: improved properties of the composition. 3 tbl