Journal of Data Acquisition and Processing Vol. 38 (1) 2023 2817 ISSN: 1004-9037 https://sjcjycl.cn/ DOI: 10.5281/zenodo.778273 ENHANCING WORKABILITY AND STRENGTH OF SELF-COMPACTING CONCRETE THROUGH COPPER SLAG AND SUPPLEMENTARY CEMENTITIOUS MATERIALS Ajmal M Sajeev 1 Research Scholar, Department of Civil Engg., Sri Satya Sai University of Technology and Medical Sciences, Sehore, Madhya Pradesh. Dr. Ajay Swarup 2 Research Guide, Department of Civil Engg., Sri Satya Sai University of Technology and Medical Sciences, Sehore, Madhya Pradesh Abstract Copper slag has become a practical and economical substitute for natural aggregates in concrete applications, especially in self-compacting concrete (SCC) blends. The goal of this study is to find out if self-compacting concrete (SCC) mixtures are possible and how strong they are by changing the amount of copper slag in them in a controlled way, from 0% to 50%. The inquiry also includes the use of Portland slag cement and examines how supplemental cementitious ingredients affect the performance of the concrete. The study highlights the environmental advantages of using copper slag, such as the preservation of resources and the mitigation of greenhouse gas emissions. The material qualities of several components, such as cement, coarse aggregate, copper slag, ground granulated blast furnace slag (GGBS), fly ash, water and fine aggregate are specified to offer a full knowledge of the mix composition. The study's findings, which encompass rheological properties, workability, and compressive strength, emphasise the beneficial impact of copper slag on the long-term structural performance of SCC mixes. This influence is particularly notable when copper slag is used as a substitute at a 20% level. Introduction Concrete has been a fundamental component in the building industry for a significant period, serving a crucial function in the creation of structures around the globe. Nevertheless, the extensive use of cement has detrimental effects on the environment, mostly due to the energy- intensive and carbon-emission-heavy nature of the cement manufacturing process. The environmental consequences have led to a transition towards more sustainable practices in recent years. Two notable methods in the pursuit of environmentally friendly buildings are green self- compacting mixes (GSCM) and the integration of slag replacements in concrete. These approaches provide novel options to reduce the environmental impact linked to conventional concrete manufacturing while still guaranteeing that the performance and longevity of structures are not impaired.