Skyscrapers are landmarks in urban centers, not only promoting land use and economic development, but also a modern transformation of success and wealth. The completion of super-tall buildings represents the image of the city on the one hand, and promotes the development of related architectural, and economic fields on the other.

Super High-rise Buildings

Since entering the 21st century, skyscrapers, the symbols of modern cities, have been rising at an astonishing rate all over China, refreshing the city skyline time and again. According to statistics, China has 40% of the world’s super-tall buildings, with 2,395 buildings above 150 meters, 823 buildings above 200 meters, and 95 buildings above 300 meters, all three indicators ranking first in the world. Micro-silica powder, as a concrete additive, is widely used in the application of super-high rise buildings because of its own characteristics.

Silica Fume Features

Super high-rise buildings have high requirements for concrete, in order to improve the performance of high-strength concrete and reduce the amount of cement to reduce the heat of hydration, a certain amount of fly ash, silica fume, granulated blast furnace slag and other mineral admixtures can be added. Such as silica fume , can fill the pores between the cement particles, while generating gel with hydration products, and alkaline material magnesium oxide reaction to generate gel. Can significantly improve the compressive, folding, seepage resistance, corrosion, impact resistance and wear resistance, with water retention, prevent segregation, water secretion, significantly reduce the role of concrete pumping resistance.

Silica Fume Other Applications

• Refractories. Silica fume is commonly used in castable, sintered, and fused refractories. For example, it can be used in high-performance, high-grade, and low-cement refractory castables and prefabricated parts, air permeable bricks, large-scale iron trenches and ladles, and more.
• Mortar and concrete. Silica fume can also be used for harbour wharfs, high-rise buildings, railway bridges, reservoir dams, concrete pavement, and more.
• Protective coatings. Nano-silica sol serves as an active material for fire protection, environmental protection, and anticorrosive coating.
• Wall and decorative materials. Silica fume can also be used for thermal insulation mortar, polymer mortar, and as an interface agent for wall insulation.
• Putty. Microsilica can be used in putty powder for exterior and interior wall insulation.
• Filling and reinforcement. It is also used as filling and reinforcing materials in resin, rubber, paint, unsaturated polyester, and more.
• Additives. Finally, silica fume is commonly used as an additive in other active areas.