Marble like all calcareous rocks is particularly sensitive to degradation by acid chemicals and to weathering.
Marble statues degrade due to.
During the past several years research in the effects of acidic deposition on carbonate stone has been conducted under the national acid precipitation assessment program napap 2 to define the incremental effect of acidic deposition under ambient environmental conditions.
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Marble statuary sculptures figures and busts.
Acid rains are one of the main degradation agents for marble artifacts.
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Field investigations of acidic deposition effects on limestone and marble.
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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.
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Marble is commonly used for sculpture and as a building material.
Marble statuary sculptures figures and busts is a schlitzberger specialty.
Several types of marbles.
Natural marble with immense beauty has enormous workability due to its ageless characteristic.
When sulfurous sulfuric and nitric acids in polluted air react with the calcite in marble and limestone the calcite dissolves.
Marble is a metamorphic rock composed of recrystallized carbonate minerals most commonly calcite or dolomite marble is typically not foliated although there are exceptions in geology the term marble refers to metamorphosed limestone but its use in stonemasonry more broadly encompasses unmetamorphosed limestone.
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Despite the fact that degradation of ornamental stones has long been studied in cultural heritage field mainly focused on preservation of monuments historical heritages and statues 16 17 18 19 20 bowing was identified just few decades ago and has degraded some specific kinds of ornamental stones in short periods.
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Stone surface material may be lost all over or only in spots that are more reactive.
Marble is a metamorphism of limestone as a result of pressure and heat in the earth crust due to geological processes.
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Erosion due to dissolution.
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Marble has numerous applications as building material in monuments for structural and decorative purposes winkler 2002.
Marble and limestone are two of the most commonly encountered materials in historic structures.
