The following study focuses on achieving harmonization of cement standards at the international level, with a trend towards the use of sustainable materials that increasingly lead to a Net Zero society. Several cements with different clinker additions were analyzed in order to evaluate their performance by compressive strength as well as the influence of fineness and workability parameters might have on them, following the procedures established in the international standards ASTM and CEN. It was evident that LC₃ cement, despite the differences found in the testing procedures, maintained always excellent quality. This study allows us to assess whether the methodological differences identified between both standards influence the physical-mechanical parameters of the cement and promotes the need for the application of this cement in international projects.