As is widely known, India is still a developing country, and during the last 20 years, the demand for industrial and infrastructure projects has significantly increased. The most crucial element of every infrastructure project is the foundation. Verifying that the soil mass beneath a rigid foundation is strong enough to sustain the substructure’s weight is crucial. However, this condition may not always be reached in some places due to the low shear strength of the soil. Clayey soil, which covers much of India, generally has poor geotechnical characteristics like weak shear strength, poor drainage, and considerable shrinkage. The unpredictable engineering properties of clayey soil can be reduced by using stabilizer additives or by replacing it with high-quality soil. Cement, lime, bitumen, calcium chloride, and other materials have shown outstanding performance in stabilizing expansive soils, despite the fact that they can sometimes be highly costly. Thus, research on improving soil characteristics through the use of waste materials and byproducts has yielded some very encouraging results. Utilizing waste materials to stabilize soil is not only cost-effective but also environmentally advantageous. The primary objective of this study is to ascertain whether using rice husk ash (RHA) and CaCl2 may enhance the engineering properties of problematic clayey soil and make it suitable for use in foundations. To determine whether using waste products in soil is feasible and to identify potential solutions, a thorough literature analysis was conducted.