The carbon footprint of cement production has led to increased interest in developing concrete with lower carbon emissions by incorporating supplementary cementitious materials (SCMs). However, the understanding of how chloride ingress behaves over the long term and under real-site conditions when SCMs are used remains incomplete. Many studies have been conducted in laboratory settings to explore the effects of SCMs, but their application in actual construction sites has been more recent. As a result, there is limited longterm data on the performance of these cementitious additions in real-world environments., Furthermore, to the best of our knowledge, there is no comprehensive database that catalogues the chloride profiles of concrete compositions that incorporate SCMs. Assessing maritime durability requires a comprehensive understanding of the evolution of the chloride diffusion coefficient and concrete aging. It is essential to thoroughly investigate these factors, as they play a critical role in durability and provide input data for numerical models. This paper aims to study the effect of fly ash and silica fume on chloride propagation in concrete, addressing challenges in predicting chloride profiles and assessing durability by analyzing chloride profiles. A database containing over 210 chloride profiles of Ordinary portland cement, fly ash and silica fume concretes has been compile. It includes 68 compositions from structures and samples exposed to real-life long exposures site conditions and 28 compositions of laboratory-fabricated samples exposed on-site. The profiles were digitized and redrawn for analysis to comprehend the influence of SCM type, percentage of substitution, exposure conditions, and time (ranging from 0 to 60 years) on chloride propagation and surface concentration. Through this analysis, we aim to determine the contribution of each parameter and identify those with the highest impact on durability. The addition of SCMs significantly reduces chloride propagation, resulting in denser and less permeable microstructures. The distinctive bell-shaped chloride profile, characterized by an initial increase and subsequent decrease in chloride concentration, is not exclusive to tidal exposure or ordinary portland cement concrete.