- May 28, 2018 -
Microsilica has a wide range of applications. The most common application is in the concrete construction industry. With the continuous development of the construction industry, high-rise buildings are increasingly appearing in people's sights.
According to incomplete statistics, in 2016, 128 buildings with more than 200 meters in the world's 19 countries, 54 cities have risen and created an unprecedented historical record with a total building height of 30,301 meters. For the ninth consecutive year, China has the largest number of completed buildings of 200 meters or more. In 2016, it accounted for 67% of the world's total. It is worth mentioning that the Guangzhou Chow Tai Fook Financial Center (East Tower) completed in 2016 has become the world's fifth tallest and second tallest high building in China with 530 meters.
The reason why microsilica is used in high-rise buildings is because of its own characteristics:
First, micro-silica fume can effectively improve the transmission efficiency of super-high-rise pumped concrete. The micro-silica fume has a micro-aggregate effect. It can make the cement slurry more compact, reduce the generation of bubbles, and maintain the pressure of the pumped pipeline.
Secondly, it improves the flowability of concrete and promotes the mixing of aggregate and mortar in concrete. Since the diameter of microsilica particles is basically less than one micron, it can provide lubrication and reduce the friction of the inner wall of the pipeline. The risk of plugging during pumping is reduced.
Third, enhance the early activity of concrete, shorten the concrete solidification time, can provide higher concrete strength in the early stage. This has an important impact on high-rise buildings and water conservancy projects.
Fourth, it can save engineering costs, shorten the construction period, and reduce the investment of equipment. The concrete added with micro-silica powder can pump more than 200 meters at a time. Without the addition of micro-silica, the project will increase a lot of expenditure. .