There are many reasons that can cause sesame gray stone lesions,
The shortened service life of stone and weakened decorative effect are due to the presence of many pores and micro crack structures in Shandong sesame ash stone, which makes it easy for fine dust and pollutants in the air to penetrate into the interior of the stone through capillary action. Generally speaking, the stronger the permeability and surface adsorption of stone, the smaller its particles and higher its porosity. Due to the unstable chemical properties of certain components in stone, they are prone to react with substances in the external environment. For example, some components of stone contain iron ore, which can cause rusting and yellowing when the stone is exposed to moisture. Some stone materials also contain alkaline substances in their composition, so when exposed to air, they are easily corroded by acidic oxides, leading to alkaline phenomena. Stone materials containing silicate minerals are also prone to damage by materials containing alkaline substances, and so on.
1、 Sesame gray stone gradually fades in color due to oxidation. In addition, the occurrence of stone lesions is affected by climate change, which directly affects the beauty and service life of sesame gray stone.
2、 After a series of procedures such as mining and processing, the original quality of sesame gray stone has been changed. If the phenomenon of cracks in stone is caused by incorrect mining methods, then the iron tools used in the process of processing stone can also cause rust and other lesions in the stone. On the one hand, during storage, transportation, and use, stone is easily affected by factors such as lichens and freezing, leading to damage. On the other hand, inappropriate construction techniques and materials used in construction can also have some impact on stone, such as the use of certain stone adhesives that may cause yellowing.
3、 Some iron ore substances contained inside sesame gray stone not only cause whitening of sesame gray stone, but also may cause alkali leaching,. The reason for these phenomena is due to improper handling of waterproofing in the early stage. It is precisely because the interior of the stone has been infiltrated with moisture that the discoloration of sesame gray stone has occurred