Origin of Gypsum-rich Coatings on Historic Buildings
| Autor: | Carlos Alves, D. Fernández Mosquera, J. Sanjurjo Sánchez, J. R. Vidal Romaní |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Environmental Engineering
Gypsum Granitic rock Ecological Modeling Metallurgy Rock weathering Air pollution Mineralogy Atmospheric pollution Weathering engineering.material medicine.disease_cause Pollution Deposition (aerosol physics) medicine engineering Environmental Chemistry Dissolution Geology Water Science and Technology |
| Zdroj: | Water, Air, and Soil Pollution. 204:53-68 |
| ISSN: | 1573-2932 0049-6979 |
| DOI: | 10.1007/s11270-009-0025-9 |
| Popis: | Gypsum-rich coatings found on buildings constructed with granitic rock ashlars have been studied, from both an urban and a rural area of the NW of Spain. Previous works have attributed gypsum to rock weathering by atmospheric pollution. Mineralogical, chemical, and physical data of coatings have allowed us to distinguish six different types of coatings formed in several ways. In most cases, they are originated by the deterioration calcium-rich plaster building materials. Sulfation of Ca-rich coatings, in situ gypsum dissolution and precipitation, and deposition of air pollution particles are the most important agents related to genesis of coatings. In fact, remains of plasters practically intact were found in some studied buildings. Also, data from coatings and rock ashlars suggest that gypsum-rich coatings are not formed by environment–rock interaction. Coatings located on different parts and facades of the buildings and submitted to different environmental conditions decay in a different way. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink