Application of silica fume (micro silica fume) and its use in engineering construction

Sanmei Microsilica (silica fume) is used in water conservancy and hydropower projects: After impregnated and abrasion-resistant parts, the incorporation of micro-silica fume can greatly improve the impermeability, crack resistance, impact abrasion resistance, and cavitation erosion resistance. The service life of the building. Such as dam seepage concrete panels, inlets, tunnels, channels, the main structure of the lower part of the hydraulic structures and structures. The traditional anti-abrasive materials mostly use epoxy mortar and other polymer materials. Although the anti-abrasion ability of such materials is good, but because of its own coefficient of linear expansion several times that of ordinary concrete base, it is not well adapted to the temperature of the base concrete under natural weather conditions. Easy to crack off, and the construction is complicated, toxic, and expensive. With the use of micro-silica fume concrete, the impact abrasion resistance is improved by about twice, and the anti-abrasion resistance at the anti-48 m/s flow rate level is increased by more than three times. It has been widely used in water conservancy and hydropower projects such as Three Gorges Power Station, Ertan Power Station, Zipingpu Power Station, Yellow River Xiaolangdi Power Station, Fujian Shuikou Power Station, and Qinghai Longyangxia Power Station.
Sanmei microsilica (silica fume) is used to formulate high-strength, high-performance concrete: Silica fume is used as an admixture for the preparation of high-strength concrete. In practical applications, its strength grade can be 100 Mpa. Si-rich high-concrete concrete has been used in offshore oil drilling platforms, long-span bridges, high-rise buildings, tunnels, abrasion-resistant road surfaces, and sluice-bottom floors for hydraulic structures.
Sanmei Microsilica (silica fume) is used in harbor engineering and saltwater construction projects: The incorporation of silica fume in concrete can improve the abrasion resistance and impermeability of concrete, prevent electrochemical corrosion of steel bars and prolong their service life. In the underwater engineering, the chloride ions penetrate into the concrete, which causes rapid corrosion of the steel bars, delamination of the concrete, short service life, and severe destructiveness. Underwater concreting is generally conducted by a conduit method. Due to the loss of the cement slurry, it does not bond well with the base layer and reduces the strength of the portion in contact with water. After the incorporation of microsilica into the underwater concrete, these problems can be significantly improved. It has been successfully applied to projects such as the Hong Kong Tsing Ma Sea Bridge and the Lianyungang timber terminal in Jiangsu.
Sanmei microsilica (silica fume) is used in traffic engineering: Silica fume concrete is used in highway pavements and airstrips, which can greatly improve the early strength and wear resistance of concrete. In the maintenance and repair of highway pavement, it can be opened in advance. Increased economic efficiency; The addition of micro-silica fume to the airport runway and apron concrete can extend the service life and reduce maintenance.