Salt is the second of stone material damage the second factor, its water on the stone destructive power concentrated expression for: crystal weathering, crystallization pressure, hydrated pressure, absorbing moisture expansion, warming the stress formed. Inflation Because salt effect, make stone becomes SuSong, form the main weathering stone reasons and the existence of a salt is the crystallization of the salt with stone material itself, 2 it is acquired with the air stone composition combined with acidic gas generation of salt.
Construction of the stone cement, lime, soil, food, water, industrial production and the salt, some detergent will through the stone fine celled, fine fissure after capillarity into stone inside. Salt crystals in stone is formed in produce very big pressure after, also is the crystallization pressure, the pressure on the stone crystallized the damaging. Some salt also under certain conditions, into the hydrate crystals, and then to occupy larger volume, generate additional pressure, namely hydrated pressure. Gesso formula are the floods in molecular exists, with the change in temperature, pressure changes of stress change, repeatedly will eventually local stone change present, crushed denitration powder, scales. Salt is often on the stone by the destruction of water, wind in stone material surface with and repeated dissolved -- exhalation -- and then exhalation, resulting in the stone material broken.
Construction of the stone cement, lime, soil, food, water, industrial production and the salt, some detergent will through the stone fine celled, fine fissure after capillarity into stone inside. Salt crystals in stone is formed in produce very big pressure after, also is the crystallization pressure, the pressure on the stone crystallized the damaging. Some salt also under certain conditions, into the hydrate crystals, and then to occupy larger volume, generate additional pressure, namely hydrated pressure. Gesso formula are the floods in molecular exists, with the change in temperature, pressure changes of stress change, repeatedly will eventually local stone change present, crushed denitration powder, scales. Salt is often on the stone by the destruction of water, wind in stone material surface with and repeated dissolved -- exhalation -- and then exhalation, resulting in the stone material broken.
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