Now showing items 1-4 of 4
Sustainable bio-nano composite coatings for the protection of marble surfaces
Water repellency on natural stone surfaces is the most important issue in the protection of stone monuments from effects of atmospheric pollutants. In this study, effectiveness of a bio-nano composite coating, composed of ...
Effect of some surfactants on SO2-marble reaction
In the polluted atmosphere, sulphur dioxide (SO2) reacts with calcite (CaCO3) in marble producing calcium sulphite hemihydrate (CaSO3·0.5 H2O) and gypsum (CaSO4·2H2O). Gypsum develops crust at rain-sheltered surfaces and ...
Reducing marble-SO2 reaction rate by the application of certain surfactants
(Kluwer Academic Publishers, 2003-01)
Sulfur dioxide (SO2), prevalent in the modern urban environment of industrial countries, attacks calcite (CaCO3) in marble. As a result, a gypsum (CaSO4.2H2O) crust is produced at rain-sheltered surfaces while areas exposed ...
Protection of marble surfaces by using biodegradable polymers as coating agent
Biodegradable polymers have been replaced over the synthetic polymers in many applications due to their good properties such as reversibility and biodegradability. Therefore they allow new treatment on the surface of the ...