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Boosting green architecture by recycling waste glass into fiberglass
Published in Gianni Montagna, Cristina Carvalho, Textiles, Identity and Innovation: In Touch, 2020
Glass is a solid and inert substance having a glassy transition temperature, which is obtained by cooling a liquid mass consisting essentially of silica. In pure mode, glass is a high hardness metal oxide, almost chemically inert and biologically inactive, which can be manufactured with a very smooth and impermeable surface. These good properties allow glass to be used in a large number of applications. Although universally usable, however, the usual glass is usually brittle, easily breaking. Ordinary glass is obtained by melting at 1250 °C silicon dioxide (SiO2), sodium carbonate (Na2CO3) and calcium carbonate (CaCO3), followed by rapid cooling of the melt to a rigid state. crystalline. The glass production process basically uses sand, limestone, soda and feldspar as raw material.
The role of SiO2 and silica-rich amorphous materials in understanding the origin of uncommon archeological finds
Published in Materials and Manufacturing Processes, 2020
Glass production requires SiO2-rich raw materials, easily melted by using fluxes and such rock types are rhyolite tuffs, and some other resources such as quartz sand, ground quartz, etc.[28,29] In NE-Hungary glass production, although only based on evidence from the medieval ages, was mostly based on rhyolitic volcanic rock materials. In the case of slag-like materials recovered from a furnace,[30] we established that we were dealing with a residue of glass production and glassy slag. Since these were only sporadic finds and appeared in a central position in the furnaces, it is logical to assume a half-processed raw material as the origin.