Why Does Marble Corrode

Acid rain contains carbonic nitric and sulfuric acid that are produced by oxidation and dissolution in water of gaseous oxides co 2 no 2 and so 2 present in the air as chemical pollutants.

Why does marble corrode.

Causes and cures and why we recommend white or very light marble never be used in a shower sitting in my office one morning i received a call from a very upset home builder. How does acid precipitation affect marble and limestone buildings. Acid rain has a significant effect on marble and limestone. If these deposits are exposed to water they can rust and leach through to the surface causing the yellow brown stains.

On non acid resistant stones like limestone or marble rust can be a non repairable problem. When sulfurous sulfuric and nitric acids in polluted air and rain react with the calcite in marble and limestone the calcite dissolves. White carrara marbles are known to contain iron sulfide pyrite minerals. A yellow brownish stain has begun to appear on the marble bench slab.

Taj mahal is an example of corrosion of marble the discoloration of its marble is due to corrosion. Why does my carrara marble have orange stains. Marble like all calcareous rocks is particularly sensitive to degradation by acid chemicals and to weathering. Iron deposits that are embedded in white marble tile especially carrara marble are typically the cause of this type of stain.

Acid rains are one of the main degradation agents for marble artifacts. He told me he was building a two million dollar home and had installed nearly 3500 square feet of a white statuary marble tile. When sulfurous sulfuric and nitric acids in polluted air react with the calcite in marble and limestone the calcite dissolves. Real marble tiles have a beautiful unique look like no other surface with all their whirling patterns and shade variations.

In exposed areas of buildings and statues we see roughened surfaces removal of material and loss of carved details. Carbonic sulfuric or nitric acid are components of acid rain that will react with the calcium carbonate in the marble and limestone to pit and dissolve the rock over time. The aforementioned conditions plus the stone being subjected to excessive moisture can cause rust staining or also know as inorganic metal stains. Stone surface material may be lost all over or only in spots that are more reactive.

Acid precipitation affects stone primarily in two ways. Marble and limestone river rocks form from the action of water on the rock as they move down the river. That is a natural element of the stone so it doesn t make the stone. The gaseous oxides co 2 no 2 and so 2 present in the air as chemical pollutants mix with water in air to form acids such as carbonic acid nitric acid and sulphuric acid this acid comes down as acid rain and cause corrosion of marble statues calcium carbonate present in marble is transformed.