Acid Vs Marble

Marble and quartzite can be finished in a variety of ways.

Acid vs marble.

Marble is often crushed and used for acid neutralization in streams lakes and soils. It is one of the most effective acid neutralization materials. When sulfurous sulfuric and nitric acids in polluted air and rain react with the calcite in marble and limestone the calcite dissolves. Marble has a moh s hardness rating of about 3 while quartzite has a rating of approximately 7.

Stone surface material may be lost all over or only in spots that are more reactive. Being composed of calcium carbonate marble will react in contact with many acids neutralizing the acid. Applications choose a commercial cleaner containing phosphoric acid and dilute it with water if instructed by the manufacturer. It is used for acid neutralization in the chemical industry as well.

Quartzite is quite different. In exposed areas of buildings and statues we see roughened surfaces removal of material and loss of carved details. An outline of an experiment that could be used to find the time and hence rate of reaction of marble chips and hydrochloric acid. This black crust is primarily composed of gypsum a mineral that forms from the reaction between calcite water and sulfuric acid.

The hardness of marble vs. However concrete acid stain possesses the unique property of creating a marble like effect without any additional staining techniques. This acid etching can only be removed by professionally resurfacing and rehoning the stone. This means that marble is much softer and will scratch easier than quartzite.

For example while you can use phosphoric acid on ceramic porcelain and composite surfaces you should never attempt to use it on natural marble onyx granite or limestone. Particularly on older concrete slabs exposed to the elements the variable porosity of the slab allows the stain to penetrate to different depths creating natural areas of light and dark staining.