Recipro40-S is a high-performance calcium aluminate cement developed by Çimsa’s Research and Application Center. It is engineered to promote strong ettringite formation in dry mix mortars such as self-leveling screeds, flooring compounds, and repair applications where early strength and dimensional stability are essential. When used with a compatible calcium sulfate source, it enables early-age ettringite reaction without the need to incorporate Portland cement, offering formulation flexibility and contributing to reduced carbon emissions. Its light off-grey color ensures visual distinction in application areas, while its robust performance under varying environmental conditions makes it ideal for demanding applications.