K. Yuva Pallavi 01 01 Stone dust a byproduct generated duringcrushing stones representsapproximately25 ofthe final productionfromunitsof stone crushingTypicallyreleaseddirectly into the environment stone dust contributes significantly to environmental pollution In an effort to mitigate these adverse environmental impacts and promotes a stainable construction practices stone dust can be effectively utilized either in the production of new materials or as partial substitutes for fine aggregates in concrete This approach not only helps in the effective use of natural resources but also minimizesenvironmental wasteIn this study stone dust is used as apartial replacement forafine unit and flyash additional cement material is used as a partial replacement for cement The aim of experimental examination is to set optimal levels of substitutes of stone dust and flyash which lead to improvement or comparable solid properties in concrete specifically for the M40 class The experimental program includes partial replacement of fine aggregate with stone dust in the ratio of 10 20 30 40 and 50 and partialreplacementofcementwith ash at 5 10 15 20and 25 Evaluate the mechanical properties of the modified concrete standard specimens were prepared including cubes of dimensions 150mm150mmx150mm for Compressive strength testing cylinders with a diameter of 150mm and a height of 300 mm for tensile strength and beams50cmx 10cmx 10 cmto test the bending strength The resultsof this study will help to identify the optimal combination of stone dust and replace the fly ash toachieve sustainable and highperformance concrete thus contributing to environmental protection and resource efficiency Copyright (c) Journal of Science Engineering Technology and Management Science. All rights reserved 2026