from the conferences organized by TANGER Ltd.
Due to increase of glass waste landfills, the alternative strategies of silicon-based glass waste disposal such as a partial replacement for cement and aggregates in concrete are investigated. However, the impurities and contaminants in glass waste complicates its direct use as efficient secondary raw material for sustainable construction applications and compel use of additives or glass surface modifications. Therefore, in this work the most common (dry and wet) surface modification strategies compatible with civil construction were used to alter the surface of ground glass from ordinary municipal glass waste. Different microscopy and spectroscopy methods were used to analyze the morphological and composition changes of modified ground soda-lime silica glass. The detected changes in glass surface composition were explained by etching, redistribution or polymerization of carbon-based surface contaminants or metal ions leaching. The observed findings indicate possibility of glass reactivity altering and will be helpful in the understanding and explanation of calcium-silicate-hydrate formation kinetic and early-age behavior of concrete with recycled glass admixture.
Keywords: Soda-lime silica glass, dry treatment, wet chemistry, composition analysis, civil engineering© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.