The document presents the results of an experimental study on stabilizing black cotton soil using burnt brick dust. Black cotton soil is problematic for construction due to its expansive properties when wet, resulting in poor soil strength and engineering properties. Laboratory tests were conducted on black cotton soil samples with the addition of 0%, 10%, 15%, and 20% burnt brick dust to evaluate their swelling potential, liquid limit, plastic limit, compaction characteristics, California Bearing Ratio (CBR), and unconfined compressive strength (UCS). The results showed that with the addition of burnt brick dust, the swelling potential, liquid limit, and plastic limit of the soil decreased while the maximum dry density increased and optimum moisture content decreased. CBR and