IMPREGNATING COMPOSITION FOR MATERIALS OF POROUS STRUCTURE AT MOISTURE CONTENT MORE THAN 10%; METHOD OF WATER-PROOFING OF MOISTURE-LADEN CONCRETE (VERSIONS) AND METHOD OF MANUFACTURE OF WATER-PROOF VENEER (VERSIONS) WITH THE USE OF THIS COMPOSITION Russian patent published in 2008 - IPC C04B41/63 C04B41/62 C04B41/47 C04B41/48 B27K3/50 B27K3/34 

FIELD: impregnating compositions for porous materials.

SUBSTANCE: proposed composition contains castor oil and solvent in the amount of 1-9900 parts by mass per 100 parts by mass of castor oil; composition contains at least one agent selected from groups (a), (b) and (c) which is used as solvent. Proposed method includes water-proofing of moisture-laden concrete by applying proposed impregnating composition, manufacture of water-proof veneer including bonding of moist veneer sheets under pressure which are impregnated with proposed composition with solvent selected from group (a) or (b) and bonding of moist layers of veneer sheets impregnated with proposed composition with solvent selected from group (c). Proposed composition is simple and moderately priced. It deeply impregnates surface layer of moisture-laden degraded concrete, thus considerably increasing water-proofness of concrete.

EFFECT: increased strength of splitting over bonded layer; improved ultimate strength at static bending.

7 cl, 2 tbl