Understanding Efflorescence on Natural Stone
When installing stone materials with wet cement mortar, alkaline substances in the cement can migrate to the surface of the stone through its joints or capillaries. As the mortar dries, these substances can crystallize and leave a white powdery residue known as efflorescence.Characteristics of EfflorescenceEfflorescence appears as white streaks that flow downward from the joints of the stone.It seeps out from the coarser capillaries in the stone's surface, creating irregular white powdery pa...
Analysis of Common Stone Defects: Water Stains
Characteristics of water stainsWater stains occur when hygroscopic substances penetrate the stone, resulting in moisture marks on the surface that are difficult to dry naturally. The main characteristics include:Visible moisture stains: To the naked eye, there appear to be traces similar to wetness.Resistance to drying: These moisture stains remain wet or are difficult to dry completely. Even when exposed to sunlight or heated, the moisture stains persist.Water stains are one of the most commonl...