Unconfined compressive strength test on geopolymer fly ash stabilized clay shale

This paper discusses the problem of clay shale in construction and need for its improvement. The use geopolymer as a sustainable environmentally friendly solution soil stabilization is presented an alternative to cement-based stabilization. Geopolymers are inorganic aluminum-silicates formed by silicon aluminum can be easily found materials such fly ash mixed with sodium hydroxide silicate. successful stabilizer has been reported several studies, alkali activators used significantly impact mechanical properties durability geopolymer-stabilized soil. aims explore how works corresponding unconfined compressive strength value. study's findings indicate that concentration activator had significant influence on stabilized soil's strength, brittleness index, secant modulus. research identified optimal range 12-14 M Na2SiO3+NaOH mixtures ash-based geopolymers, emphasized importance ratio stabilizing materials. However, study suggests further necessary investigate different ratios molarities properties.