stone conservation

Stone as building material, because of their noble, elegant, it is especially welcomed by consumers, but has also been found that there are numerous problems of stone to make people pay attention to the importance of stone conservation.
 
     Cause of pollution can be briefly divided into four categories:
     First, organic materials, cigarette stains, soy sauce stains, iodine stains.
     Second, the metal stains such as rust, steel, rust, lead, rust.
     Third, oil, gasoline, oil, paint.
     Fourth, the most vulnerable and difficult to avoid water damage is, in general, water stains can evaporate at a certain time, but in the case of underwater high-temperature water damage may not disappear, long-term storage, the dye stains substances (liquids excluded) Impact on the stone itself is not the only substance meets water, then stained chemical changes made​​, it can be concluded (water) is the greatest enemy of stone, only to be blocked pores stone to solve the problem.
 
     For example: water storage in the stone, the stone will change, mineral salts within the stone because of exposure to moisture and chemical reaction, when the crystal gradually become larger, the stones will burst open and the precipitation of the crystal surface, such as the Golden Flower Beige, Taiwan, green, gold, beige, beige and other Egypt.
     Stone protection is "to prevent water infiltration, so that water vapor exhaled. " "Prevention is better than cure ", this saying is most appropriate for Stone, however, the protective agent for the different characteristics of stone, the stone provides comprehensive protection against such as water, dirt, grease and other infiltration, but also to prevent the mineral salt Bring out the stone, which produce white or rust stains and other Chinese.