Sulfoaluminate cement (SAC) is a type of specialty cement that primarily consists of calcium sulfoaluminate (C 4A 3S) minerals. It is known for its rapid set and high early strength characteristics, which are derived from its distinct mineral composition. The main reaction in SAC involves the formation of ettringite (AFt), which occurs rapidly and contributes to the early strength gains. This type of cement is particularly useful in applications requiring quick setting times and high early strength, such as emergency repairs and prefabricated concrete elements. The formation of ettringite in SAC is also beneficial in controlling shrinkage, reducing the risk of cracking in drying environments. Under severe environmental conditions, such as high moisture or sulfate exposure, SAC offers superior durability compared to ordinary Portland cement due to its unique chemical resistance properties (Kantro 2000).