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This study introduces an innovation for addressing the integral challenges associated with conventional geopolymerization techniques, specifically via developing mechanochemically geopolymeric activation (MGA) stabilizers that are environmental- and user-friendly for stabilizing soil. These MGA stabilizers' effectiveness is compared against their conventionally geopolymeric activation (CGA) counterparts. Also examined is the effect of granulated blast furnace slag (GGBFS) on the durability and strength of soil samples that have been stabilized, as well as the activation methods' effect on soil strength and efficacy following sulfuric acid (H2SO4) exposure. In terms of durability, the performance of these methods was determined by having the specimens submerged in a 1% H2SO4 solution for 60 and 120 days. Numerous aspects were evaluated, including visual appearance, mass changes, unconfined compressive strength (UCS), ultrasonic pulse velocity (UPV), and the geopolymer-stabilized soil samples' Fourier infrared (FTIR) spectrum. It was found that the MGA samples' UCS bested that of the CGA-stabilized soil by 10-22%. The stabilized soil specimens' strength increased proportionally with GGBFS content; UCS values rose from 4.5 MPa at 50% GGBFS content to 9.7 MPa at 100% GGBFS content for MGA specimens. After 60 days of H2SO4 exposure, MAG-stabilized soils retained 80% of their UCS compared to 76% for CGA samples. After 120 days, residual UCS dropped to 53% and 48% for MGA and CGA samples, respectively. Notably, soils stabilized with 75% GGBFS exhibited superior resistance to H2SO4 degradation. Mechanochemical activation and high GGBFS content facilitated the formation of homogenous geopolymer gels, which encapsulated soil particles and contributed to a denser internal structure. These findings highlight the potential of MGA stabilizers as a durable and effective solution for soil stabilization in aggressive environments.

来源平台：GEOTECHNICAL AND GEOLOGICAL ENGINEERING