| 摘要 |
1. A method for cleaning and maintaining a building made of stone, wherein the surface of said building is sprayed or sprinkled with water, characterized in that said spraying or spinkling is carried out during repeated time periods, said periods between individual spraying or sprinkling operations are selected such short that a permanent moisture keeping and thus outward diffusion of noxious substances is guaranteed, and that measurements of the contents of said noxious substances within the stone are carried out. |
