Abstract: Copper tailings are solid waste produced after copper ore smelting. A large number of unused copper tailings not only occupy land, but also pollute the environment, which has seriously affected the development of industry and environmental protection. Therefore, its large-scale and resource utilization is imminent.On the other hand, The shortage of road construction materials also restricts the progress and quality of highway construction. Therefore, this study aims to explore the application of copper tailings in roadbase materials, achieving high-value, high-performance, and high-utilization resource recovery while alleviating material shortages. The research analyzes the physicochemical and mechanical properties of copper tailings and, based on these findings, proposes control indicators for raw materials when used in roadbases. To enhance performance, the study modifies the tailings' road-specific characteristics by incorporating clay and different types of cementitious materials.Through experimental investigations, the effects of varying mixing ratios and cementitious material types on the strength and shrinkage properties of copper tailings are evaluated to determine the optimal clay-to-tailings ratio and the most suitable binding agents. The research culminates in the development of a complete construction technology for copper tailings-based roadbase materials, validated through real-world engineering applications. Key findings demonstrate that clay modification and cementitious material incorporation significantly improve the road performance of copper tailings. The experiments identify the optimal blending range for clay and tailings, as well as the most effective cementitious materials. Field applications confirm the high-value, high-performance, and high-utilization efficiency of copper tailings in roadbase construction.The proposed integrated construction technology not only provides a practical solution for the large-scale and resource-efficient utilization of copper tailings but also offers innovative approaches to address road material shortages. This research holds substantial economic and environmental benefits, contributing to sustainable development in both mining and infrastructure sectors.