Abstract
Abstract The expansive soils change its form from soft in monsoon to hard in summer. This property of it poses serious problems to lay roads. Hence the engineering properties of the expansive soils need to be improved. Generally, to stabilise the black cotton soil and to improve subgrade or sub base soil strengthlime and cement is used. But the usage of cement and lime is not recommended because of the expensive and energy intensive nature of production as well as the greenhouse gas emission during production. The experimental results of Engineering properties obtained from GGBS stabilised black cotton soil (BCS) is presented in this paper. The research was carried out using 0% to 50% GGBS content with 3M to 11 M NaOH solution. The durability and unconfined compressive strength Tests were performed on the stabilized samples. It is observed that with addition of 40% GGBS and 8 M of NaOH leads to obtain the higher unconfined strength for stabilized BC Soil. Durability test was conducted on the Natural and stabilized Black cotton soil and noted that only 9.2% UCS strength was reduction after 12 number of wetting–drying cycles.
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