Stabilization of Clay Soil using GGBS based Geopolymer

Clay soils are considered as problematic soils in civil engineering field due to its high compressibility, secondary compression, inadmissible strength characteristics. Due to rapid urbanization and industrialization, it becomes essential to use such soft soil for construction activities. In the present study, alkali activation of ground granulated blast furnace slag (GGBS) i.e. Geopolymer was used for stabilization of Clay soil. NaOH with 12 Molarity was selected as alkali solution. UCS test was carried out to find the strength development in soil. It was identified that UCS value increased with amount of GGBS and concentration of alkali solution. The soil-GGBS based geopolymer has shown a maximum value of 5927 kPa for 28 days of curing period in unsoaked condition. In case of soaked condition the soil-Geopolymer specimens with 6,12 and 18 percentages of GGBS has attained strength486.3 ,4014 and 4801till 28 days of curing period. The various effects acting on soil- Geopolymer specimens like amount of GGBS, concentration of Alkali solution, and curing period was examined.