METHOD OF PROCESSING POROUS BUILDING MATERIALS Russian patent published in 2005 - IPC

FIELD: manufacture of building materials.

SUBSTANCE: subject of invention is processing of building materials used under unfriendly operation conditions as well as for design refinement of buildings or constructions in any color spectrum. For this end, building materials are impregnated by impregnating compositions. Process comprises placing objects of these materials in impregnating chamber, evacuation, conditioning, impregnation, and discharge of objects. Impregnation is performed from one to ten times by feeding mixture of dies with hydrophobic soak into chamber under pressure 6 to 30 atm for 30 sec to 10 min, while gradually reducing pressure in impregnating chamber to atmospheric value. Dies utilized are of latex or acrylic type and possess diffusion properties, whereas hydrophobic soak is a silicone-based soak possessing membrane properties. Object to be processes can be bricks, parts based of cement, gypsum cement, natural stone, wood, and ceramics.

EFFECT: reduced operation cost, improved quality of products, and achieved design refinement of buildings or constructions.

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