Use of waste green soda bottle-glass as an additive in the artistic ceramics production

Abstract

This study investigates the potential use of post-consumer green soda-bottle glass (GSBG) waste as a sustainable additive material in artistic ceramic bodies. Composite samples were prepared by incorporating ground GSBG into white ceramic clay at 20%, 30%, 40% and 50% weight ratios, across three distinct particle sizes. The samples were shaped using mold pressing and hand-forming techniques and sintered at and to compare sintering and full vitrification conditions. XRF analysis confirmed the potential of glass as a flux due to high Na2O (~10.78 wt.%) and CaO (~9.26 wt.%) content. At the GSBG completely melted, transforming the microstructure. The optimal formulation was achieved with the 40 wt.% glass content using the smallest particle size, resulting in near-zero water absorption (below ~1.0%) and maximal densification. XRD analysis confirmed this structural change by revealing a prominent amorphous hump, indicating successful vitrification, which was absent in the pure clay body. Conversely, lower temperatures (930 °C) and larger particles led to limited melting and crack formation. This approach offers an environmentally responsible upcycling route, providing structurally stable and aesthetically satisfying green-glazed surfaces suitable for artistic ceramics production.

Keywords

• Sustainability
• Artistic
• Ceramics
• Upcycling
• Glass
• Waste Material

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