The usage of recycled aggregates in concrete leads to a significant reduction in the extraction of natural resources and the disposal of construction and demolition wastes into landfills. The application of recycled aggregate (RA) in concrete results in an environment-friendly and cost-effective construction approach, contributing to a circular economy. There are different ways for the integration of recycled aggregates in concrete, such as direct addition, addition of treated RA to enhance the properties, and addition of mineral or chemical admixtures directly into recycled aggregate concrete (RAC). The current study explores the life-cycle assessment of silica slurry-treated recycled coarse aggregate (RCA) added concrete and its impact on environment. The RCA was treated using impregnation of silica slurry into the pores of RCA, and the concrete was prepared with 50 and 75% treated RCA as a replacement to natural aggregate. To enhance the strength and shrinkage properties, 10% silica fume by weight of cement and 0.5% polypropylene fibers by volume of concrete were also added. The study confirmed the efficacy of treated RCA as a promising material for construction and, thus, a solution to various environmental impacts caused by the production of these construction and demolition wastes.