Abstract
Granites correspond to around 40% of the Brazilian ornamental stones production. However, there is a negative environmental impact due to the large amounts of waste produced. In this work, we evaluate the potential use of granite waste in proportions higher than 70% as an alternative raw material for soda-lime glass production. The glasses were produced by the conventional melt-quenching method. The nominal compositions were 70%, 75%, and 80% (wt%) of waste and complementary amounts of sodium and calcium carbonates. The glasses presented chemical composition compatible to soda-lime glasses and good optical quality, allowing up to 70% light transmission. Thus, the glasses produced proved to be efficient in immobilizing granite waste, which contributes to reducing environmental impacts.
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