Cement with added ultrafine powder is called high-performance concrete cement, also called high-performance cement or ultrafine powder cement. It is a new type of cement made by adding various materials such as ultrafine powder, mineral admixtures and chemical admixtures to ordinary cement. Compared with ordinary cement, high-performance cement is characterized by high strength, good durability, strong impermeability, good self-tightening, good crack resistance, chemical corrosion resistance, etc. High-performance cement is widely used in major projects such as bridges, tunnels, high-rise buildings, water conservancy and hydropower projects, etc. It can improve the safety and service life of the projects and reduce maintenance costs. When using high-performance cement, you need to pay attention to the mixing ratio and follow construction specifications to ensure project quality.