The application of precipitated silica in cement is to add silica to cement in the form of suspension and play a role in the cement hardening process. Silica is a fine particle with high specific surface area and adsorption capacity, which is often used to improve the performance and characteristics of cement.

The following are several application aspects of precipitated silica in cement:

Improve the fluidity of cement: Silica can act as a thickener in cement to improve the fluidity and pumpability of cement. It can increase the viscosity of cement paste, reduce loss and separation, and help to improve the working performance of concrete.

Improve the strength and durability of cement: The addition of silica can improve the mechanical properties of cement, including increasing the compressive strength, tensile strength and durability of cement. It can fill the pores in cement, increase the compactness of cement-based materials, reduce permeability and water absorption, thereby improving the durability and crack resistance of cement.

Adjusting the color of cement: Silica is a white pigment that can be used to adjust the color of cement. By controlling the amount of silica added, the cement can show different grayscales and brightness to meet specific architectural design requirements.

Improving the optical properties of cement: Silica has excellent optical properties, which can improve the reflectivity and hiding properties of cement. In specific applications, silica can be used to improve the optical effect of cement, such as increasing the whiteness of cement or improving the appearance of cement products.

It should be noted that the amount of precipitated silica added should be adjusted according to the specific cement formula and use requirements. Excessive addition may negatively affect the performance of cement. Therefore, in practical applications, sufficient experiments and tests are required to determine the optimal addition amount and effect.