<p>Dispersive soils disintegrate rapidly when they come in contact with water thereby compromising the structures being supported. The dispersion is triggered by monovalent sodium ions found in soil pore water. Identification and stabilization of dispersive soils thus becomes imperative for the safety of the intended applications. The current study examined the performance of calcinated coal gangue (CCG) and xanthan gum (XG) in controlling the dispersivity, erosion and compressibility behaviour of dispersive soil. The dosages of CCG were maintained as 1%, 3%, 5%, 7%, and 10% respectively, whereas XG was maintained at 2%. The CCG and XG treated samples were cured for 7 and 28 days, and subjected to double hydrometer test and cylindrical dispersion test to assess the dispersivity of soil. Additionally, drip erosion test and one-dimensional incremental consolidation test were conducted. Results showed that the dispersion ratio reduced from 78% to 11% for the soil treated with 2% XG and 5% CCG. Similarly, erosion depth got reduced from 18.6&#xa0;mm to 3.9&#xa0;mm when treated with 2% XG and 5% CCG, thereby transforming the soil from dispersive to nondispersive. The one-dimensional consolidation test depicted that the inclusion of CCG alone increased the coefficient of consolidation (C_v) and hydraulic conductivity (k) due to non-cohesiveness, but XG addition reduced C_v and k with an increase in consolidation pressure. The microstructural examination revealed that the bonding between soil aggregations was strengthened by the XG hydrogel and filling of interaggregate voids with CCG. Considering the durability and performance of CCG and XG, the modified soil can be recommended for short term applications.</p>