<![CDATA[Glass waste has potential for reuse as a construction material, particularly as a partial replacement for aggregates in concrete. This study aims to synthesize the effects of glass waste on concrete characteristics, compare findings between fine and coarse aggregate replacement, and identify factors explaining differences across studies. A Systematic Literature Review (SLR) was conducted by searching Google Scholar and Garuda for scientific articles published between 2021 and 2025. Ten relevant experimental studies were selected using inclusion and exclusion criteria, followed by data extraction and synthesis. The results indicate that glass waste can partially replace fine and coarse aggregates, although its effects on concrete properties vary. Compressive strength was the most frequently examined characteristic, followed by flexural strength, tensile strength, slump, unit weight, water absorption, modulus of elasticity, and permeability. Studies using glass waste as fine aggregate reported more varied outcomes, with some demonstrating favorable characteristics at specific replacement percentages. In contrast, several studies using glass waste as coarse aggregate reported decreasing compressive strength as replacement levels increased. These differences were associated with replacement percentages, aggregate types, particle size and gradation, glass shape and surface characteristics, and concrete mixture composition. The review concludes that no single replacement percentage is universally suitable for all concrete types. Therefore, glass waste utilization should consider material characteristics, replacement proportions, aggregate types, and targeted concrete properties to achieve appropriate performance while supporting construction waste reuse.]]>
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