METHOD FOR CLEANING OF CONCRETE AND REINFORCED CONCRETE STRUCTURES SURFACE PRIOR TO REPAIR Russian patent published in 2010 - IPC B08B3/02 

FIELD: construction.

SUBSTANCE: invention relates to technology of repair works and may be used to clean surface of concrete and reinforced concrete by water in process of repair after destructive action of sulfuric acid H₂SO₄ in process of corrosion of II type (under action of sulfury gases, such as sulfury anhydrite SO₂, sulfuric anhydrite SO₃ at various temperatures and hydrogen sulfide H₂S in process of microbiological corrosion. Invention makes it possible to improve quality of cleaning. In method surface is treated with water jet under pressure, treatment is carried out under pressure of 450-500 atmospheres, water flow makes 20-25 l/min, efficiency of 60-80 m²/hour, duration of exposure 0.5-1.0 min/m², extent of cleaning Sa 2½.

EFFECT: method provides for improvement of cleaning quality.

1 dwg