In tropical countries, including Ethiopia Expansive soils are difficult deposits for civil engineering construction because they swell and shrink during the wet and dry seasons, respectively. The moisture fluctuation of the soil can be controlled by using different techniques such as chemical and mechanical stabilization using optimum compaction effort to reduce swellshrinkage behavior of expansive soil. But the selected stabilization techniques and comp active effort should be economical in addition to being effective. Currently, the cost of additives like cement and lime is increasing. It is best to try other locally available materials, such as industrial waste, as a stabilizing agent. In addition, some stabilization methods do not consider the fact that expansive soil exists in an unsaturated state. The use of the soil-water characteristic curve (SWCC) as a tool to evaluate the impact of compaction energy on the stabilization of expansive soil using waste marble is examined in this study in order to establish the relationship between unsaturated soil theory and engineering problems related to expansive soils that exist in an unsaturated condition. The soils collected from Bahir Dar City(at Ayer tena Kebele) are classified as A-7-5 according to AASHTO and based on USCS test pit-1, which classified as CH, and test pit-2 and test pit-3, which were classified as MH for specific areas. In the current study, the seven-day effect of curing condition, effective marble content, and compaction parameter on the SWCC of stabilized soil was investigated. For evaluation of the effectiveness of marble waste as a stabilizer, it was added to natural soil with 5%, 10%, 15%, 20%, and 25% of the dry weight of the soil for a test of Atterberge limits, linear shrinkage, free swell, specific gravity, and 5%, 10%, 15%, and 20% mw on compaction, unconfined compressive strength, California bearing ratio, and pressure tests. With the addition of 25% marble waste, the free swell index value decreased from 125% to 44% and the liquid limit decreased from 96% to 46%, indicating that the soil changed from high swelling potential to low swelling potential. The unconfined compressive strength value and the CBR value are directly proportional to the amount of marble waste. Because of the effect of pore size distribution, soils compacted with modified and standard energy at OMC in both treated and untreated soils have a slightly higher AEV value than standard compaction and a lower rate of desaturation. Keywords: SWCC, Compaction energy, Residual water content, AEV, Marble waste