Abstract

The effect of water concentration on the properties of three commercial soda‐lime‐silica glasses has been measured. Water (H2O) concentration varied from 50 to 550 ppm‐wt. Properties measured include glass transformation temperature, transformation range viscosity, thermal expansion coefficient, electrical conductivity, and refractive index. The viscosity, Tg, and electrical conductivity decreased with increasing water content, while the thermal expansion coefficient and refractive index were unaffected by changes in water concentration.

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