Wulian gray stone is a large type of stone that is left outside for a long time and can be eroded by exposure to sunlight and rain. Below we will explain how to deal with the problem of excessive water absorption in Wulian gray stone. First, let's understand the harm of excessive water absorption to Wulian gray stone:
1. Easy to contaminate stone,
Soluble substances are dissolved in water as a solvent and carried into the interior of the stone, causing pollution. On the one hand, water absorbs sulfides from the air and enters the interior of the stone, causing many changes. On the other hand, many pollutants can also be dissolved in water, such as sewage formed from dust, fruit juice, soy sauce, etc.
2. Not easy to clean
People are accustomed to cleaning stones with clean water, but even stones that have been washed with clean water will become gray again after drying. This is because water can leave pollutants in the pores inside and on the surface of the stone, where they evaporate and are carried back to the surface of the stone.
3. Pathological changes in Wulian gray stone
Most of the different chemical reactions or physical processes that occur inside stone are related to water. For example, it is caused by the combination of water and a variety of hygroscopic substances to form gel. And rust spots are formed by water rusting the iron in the stone. The formation of the Baihua phenomenon is also due to the migration of water, which brings the calcium components in cement to the surface of the stone.
4. Destroy the structure of Wulian gray stone material
Wulian gray stone is mainly composed of calcium carbonate. It is a substance that is slightly soluble in water, and the stone gradually softens. The loss of components is due to long-term contact between Wulian gray stone and water, which causes changes in the material, such as powdering and peeling, losing its decorative value and reducing its service life.
5. Wulian gray stone discoloration
Any stone will absorb water and change color, and some stones can recover after drying. But some stones react with water, producing color differences that cannot be restored.
6. Wulian gray stone loses its luster

On the one hand, when calcium components such as water and calcium carbonate are dissolved, they will gradually dissipate, causing light loss. On the other hand, most indoor floor stones require crystallization and polishing treatment. Many crystalline materials contain wax. If wax components are frequently exposed to water, they are easily damaged and cause loss of luster.