Self-compacting concrete (SCC) is widely used in construction projects due to its unique properties, such as ease of placement and reduced labor costs. However, its durability and resistance to corrosive conditions, including chloride and sulfate attacks, present certain challenges. In this study, the Life-365 model is utilized to predict the service life of SCC under corrosive conditions. The Life-365 model can simulate ion transport and reinforcement corrosion to predict the initiation time of corrosion and its progression rate under varying environmental conditions (e.g., temperature, humidity, and chloride concentration). This research focuses on predicting the service life of conventional and self-compacting concrete, considering the effects of marble powder and microsilica additives in reducing permeability and enhancing durability in chloride-contaminated environments, using the Life-365 model.