Consolidation of historical stone by silane/siloxane treatment

An experimental study was carried out for the development and characterization of silane/siloxane surface treatment for possible use as protective and consolidation coatings of stone substrates. The silane and silioxane coatings are widely used as protection agents of historical monuments. Historical stones are very fragile because of sever weathering condition. Strengthening historical stones needs pay attention to surface treatment by the aim of decreasing humidity and improvement of mechanical properties. For this aim, the consolidation coatings based on silane and siloxane resins can be investigated to improve the mechanical properties of historical stones against weathering condition. In this study, two type of coatings based on mixed of silane/siloxane as potential coatings for consolidation of historical stone were proposed and the mechanical results were compared with uncoated stone. The mechanical tests approved the coating materials can be good candidates for protection and strengthening historical stones