In recent years, chemical solidification has been widely utilized to enhance problematic soil's finer structural integrity and macrostructural properties. Nevertheless, most study pertains to the soil of the temperate zone, and comparative investigation on highly plastic laterite soil stabilized with strong electrolyte is very limited. The objective of this study is to ascertain the performance of Hexa-hydrated magnesium chloride (MgCl2·6H2O or bischofite), an Eco-friendly stabilizer, on the macro- and micro-structural description of highly plastic laterite soil collected from Warangal, Telangana state of India. The Bischofite was incorporated with laterite soil in different dosages (2–12%) for optimal soil bischofite mix. The effect of hydrogen ions on the structural arrangement and mechanical modification of clay with curing periods was investigated by PH. The plasticity is changed substantially by the addition of bischofite. Standard compaction tests, Strength of unconfined samples (UCS), and shear strength tests were accustomed to scoping the strength aspects of untreated and treated samples. There was a noticeable improvement in soil strength when stabilized with the selected additive. The degree of strength improvement was triple that of the untreated sample at optimal additive content (8%). Furthermore, the result of consolidation tests at optimal additive content showed resistance to compressibility than natural soil. In addition, combined XRD, SEM, EDS, FTIR, and BET surface area showed that the macrostructural and microstructural advancement of laterite soil could be ascribed to the early physical support in the soil structure due to the optimal additions. Subsequently generated (M-A-H) weak cementitious Hydrates play a vital role using pozzolanic reaction with active ions. The results show that the microstructure is strongly related to mechanical solidification. [ABSTRACT FROM AUTHOR]