The water absorption of the stone surface is increased, which will cause the internal stress of thermal expansion and contraction during climate change, or the breeding of bryophytes to invade the stone, causing extrusion stress or releasing biological acid to attack the stone.
Only the curing agent can easily cause the rough surface of the stone to have the effect of darkening the color. Therefore, the actual use test should be carried out before use to prevent the adverse effect of the color change after curing.270mm HTC Bush Hammer Plate Suppliers