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The sulphoaluminate cement series can be used alone or in conjunction with ZB type sulphoaluminate cement special admixtures. It is widely used in emergency repair and construction projects, prefabricated components, GRC products, low-temperature construction projects, seawater corrosion resistance projects, etc.
The setting and hardening time of sulfoaluminate cement can be adjusted according to the needs of users so that it can reach the required strength within a few minutes to a few hours. It is very suitable for the rapid repair of urban roads, highways, airports and other projects, greatly shortening the time of road closure, and has good social and economic benefits. The ultra-high-strength grouting material made of sulphoaluminate cement such as CSA cement is applied to the grouting of the high-speed railway basin rubber bearing, and the design strength can be reached within 1 to 2 hours so that the next bridge can be erected, while the ordinary cement grouting material takes more than 24 hours to increase the bridge erection speed by more than ten times. Sulphoaluminate cement has played an important role in the construction of high-speed railways.
Ordinary cement concrete mixed with antifreeze can not freeze at 0 to 25°C, but it cannot be hardened, while sulphoaluminate cement concrete can harden normally at sub-zero temperature. Sulphoaluminate cement has played a key role in projects such as high-speed railways and winter construction.
Portland cement structure immersed in seawater, the strength will be reduced, and in severe cases, it will be reduced to 50%. The addition of an anti-sulfate corrosion agent can alleviate the corrosion to a greater extent; but it still has an impact, especially in the splash area. Project construction costs and maintenance and use costs. The sulfoaluminate cement structure does not decrease in strength but increases in seawater. The current test results show that the 28-day strength of the Portland cement structure can increase by more than 130% during the freshwater curing year-on-year. This is of great significance for improving the service life of marine building structures and saving social resources.
Other properties of sulphoaluminate cement: sulphoaluminate cement has the characteristics of low alkali, low alkalinity of hydration liquid phase, low corrosion to glass fiber, and is widely used in glass fibre reinforced concrete. Sulphoaluminate cement has the characteristic of light color. It can directly produce white and colored cement by adjusting the content of colored minerals (minimum), which can be widely used in decorative concrete, imitation stone and other products.
