Study of the chemical durability of colored archeological glasses in the aqueous aggressive media

Abstract EN

The alteration of glassy materials is the result of an extremely complex process and involves the chemical composition of glass and the environment to which it was submitted.

The objective of this work is to shed some light on the early stages of alteration exposed to the atmosphere of archaeological glasses in various sizes and colors (clear, blue, red, green, yellow and purple) glass palace of Ahmed Bey Constantine in Algeria.

To evaluate and quantify the alteration of glasses, tests were performed on samples of local archaeological glass.

An experimental accelerated deterioration began in function of pH (acidic, basic and neutral medium) time ( time for the accelerated changes, go three hours to 240 hours, and three months to a year for changes in free atmosphere) and temperature (the ambient temperature of 25°C and 80°C) in order to understand the various atmospheric factors involved in these processes of alération glasses.