Black cotton soils are able to absorb a lot of water, experience significant volume fluctuations, and experience seasonal expansion and contraction depending on the water availability. Structures built on such soils frequently suffer from this and fail. To address the swelling aspects related to these soils, techniques like preloading, moisture control, replacement of impacted soil, and additives have been employed. Various Researchers conducted research to alter the brick powder and other industrial wastes, in this examination, the soil's engineering qualities alone are studied, they correspond to the features of black cotton combined 5% 10% and 15% by weight of brick powder. The geotechnical characteristics dealt with in this study include plasticity, compaction, and swelling shrinking of that black cotton soil in terms of free swell index value