This document summarizes a study on the effect of adding lime and fly ash to dredged marine soil on its compaction characteristics and California Bearing Ratio (CBR) value. Laboratory tests were conducted by adding lime at concentrations of 2%, 4%, 6%, and 8% and fly ash at 5%, 10%, 15%, and 20% to the dredged soil. The results showed that the optimum moisture content increased and maximum dry density decreased with the addition of lime up to 2%, after which the trend reversed. The optimum moisture content decreased and maximum dry density increased with the addition of fly ash. Both lime and fly ash improved the CBR value of the soil up to certain concentrations, with lime providing the highest improvement at 6