This research explores the index and mechanical characteristics of soil geopolymers incorporating recycled glass powder (RGP). With its high silica content in the amorphous phase, RGP serves as a viable precursor for geopolymers and offers a sustainable alternative to landfill disposal. The study evaluated the plasticity, compaction and strength properties of soil geopolymers containing RGP. The glass powder was blended into soil samples at varying proportions from 0 to 50% of the dry weight of the soil. As RGP rate increased, liquid and plastic limits reduced significantly, with greatest reduction noted at 30% RGP content. Higher RGP levels also led to improvement in the compaction behavior of the specimens. Additionally, the role of an alkaline activator (sodium hydroxide: sodium silicate), in promoting geopolymerization was analyzed. Results revealed that RGP-based geopolymer-stabilized soils exhibited superior unconfined compressive strength compared to untreated soils. These outcomes highlight the potential of RGP as an environmentally friendly binder for enhancing the engineering properties of weak soils. The geopolymerization process with RGP demonstrates promising applications in geotechnical engineering, contributing to sustainable soil stabilization solutions.