METHOD OF CLEANING PAVING SLAB FROM CHEWING GUM Russian patent published in 2019 - IPC E01H1/00 E01H15/00 B08B7/04 

FIELD: technological processes.

SUBSTANCE: invention relates to the technology of mechanical-thermal treatment of surfaces based on concrete, clay, sand and crushed stone from hydrocarbon residues such as adhered chewing gum, and can be used in housing and communal services. Cleaning method includes the selection of the type of pollution, preliminary mechanical cleaning, heating, final mechanical cleaning. Pollution and the surrounding surface area of the paving slab are moistened with clean water first, then heated by the method of firing with an open flame with a temperature ranging from ambient to 1,100 °C inside a cone-shaped tapering nozzle set in place of the firing, before the formation of ash or soot, again moistened with clean water, then cooled and mechanically cleaned the place from the roasting residues.

EFFECT: method provides improved cleaning quality and reduced firing time.

1 cl, 1 dwg