Micro Silica Powder - High Strength Active Admixture For Concrete

The application of Ewende micro silica powder as a highly active admixture in the concrete industry is one of the earliest, most effective and most widely used fields in the comprehensive utilization of foreign silica fume.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 The application of Ewende micro silica powder as a highly active admixture in the concrete industry is one of the earliest, most effective and most widely used fields in the comprehensive utilization of foreign silica fume. Due to the fine particles of silica fume, large specific surface area, high purity of silica, volcanic ash activity and other physicochemical properties, silica fume can be mixed in concrete to improve the performance of concrete. For example, it can significantly improve the bond and cohesion of plastic concrete, greatly reduce the amount of rebound, increase the thickness of sprayed concrete, shorten the construction period, and save construction costs.

When special high-strength concrete is needed, silica fume is used as an admixture to formulate high-strength concrete, whose strength grade can reach 100 MPa. Many important foreign high-rise buildings, such as the Southwark Building in the United States and the BfG Building in Frankfurt, Germany, are using silica fume as a reinforcing agent for concrete. In some developed countries, important concrete water conservancy and hydropower projects, such as offshore oil drilling platforms, large-span bridges, tunnels and other projects to add silica fume, can improve seepage, abrasion and corrosion resistance, such as the Norwegian oil drilling platforms in the North Sea, Norway, Norway, Storma Crossing Bridge (301-meter span LC60 lightweight aggregate concrete building), Denmark's Dabbt Straits Bridge, the Öre Straits Bridge, connecting Denmark and Sweden Bridge in Denmark, the resund Bridge connecting Denmark and Sweden, impermeable concrete panels, intake gates, tunnels and substructures for the main plant of the Kinzua Dam in the USA. When used in highway pavements and airport runways, silica fume concrete can greatly improve the early strength and abrasion resistance of concrete. In the maintenance and repair of highway pavement, it can be opened to traffic earlier and increase economic benefits, such as the E-6 in Europe and the E-18 highway in Sweden, as well as the high abrasion-resistant ground treatment of non-metallic treatment plant in London.

In Europe and the United States, 75% of shotcrete is mixed with silica fume, while in Norway and Sweden, silica fume is a necessary material for shotcrete.