Microsilica powder is an excellent material with broad application prospects in the field of high technology at home and abroad, and can be widely used in chemical, metallurgical and other industries. It can be used in cement or concrete to improve the performance of cement or concrete, and formulate special concrete or composite cement with super high strength, abrasion resistance, scouring resistance, corrosion resistance, anti-permeability, anti-freeze, early strength, to meet the special requirements of oilfield cementing, offshore oilfield drilling platform, harbor dock, railroad bridge highway, airport runway, tunnel and urban high-rise building projects; used in rubber to improve the rubber’s elongation, tear resistance and tensile strength of rubber; used in refractory materials and ceramic products to effectively improve the strength and durability of the products.
Micro-silica fume powder concrete used in water conservancy and hydropower projects, can improve the anti-abrasion ability of the project domestic and foreign traditional anti-abrasion materials such as epoxy mortar polymer materials, such materials anti-abrasion ability, although good, but because of its own linear expansion coefficient of several times the substrate of ordinary concrete, and the substrate concrete temperature is not well adapted to the natural climate conditions, easy to crack off, and construction is complex, toxic, expensive It can not be widely used. While the use of micro-silica fume powder concrete, the impact abrasion resistance doubled, the resistance to 48m/s flow rate level of anti-abrasion ability increased by more than 3 times.
Micro-silica fume concrete used in water conservancy projects, can improve the anti-cracking performance of the project hydraulic concrete cracks, has become a big problem of general concern. Cracks are caused by the material itself due to the heat of hydration heating, such as in the concrete mixed with fly ash, although it can reduce the heat of hydration heating, but the early strength is relatively low, so that the amount of fly ash is limited.
Micro-silica fume powder concrete can improve the resistance to infiltration and salt corrosion resistance, protection of reinforcement. Underwater projects due to chloride ions infiltration into the concrete, causing rapid corrosion of reinforcing steel, concrete delamination, short life and serious damage. Underwater concrete is generally placed using the conduit method, which does not bond well with the substrate due to the dispersion of cement paste and reduces the strength of the water contact part. These problems can be significantly improved by mixing micro-silica fume powder into the underwater concrete.
Micro-silica fume powder concrete used in traffic road surface repair, with strong wear-resistant characteristics With ordinary concrete poured road, it takes 28 days to normal traffic, the general early strength of concrete also takes 3 days to traffic, concrete road surface damage is inevitable. With conventional methods of repair, it often causes traffic interruption, thus bringing serious economic losses. The use of early strength and wear-resistant properties of micro-silica fume powder concrete, by the practical application of the effect is very satisfactory. The runway of the airport requires the use of more than 80MPa concrete and good wear resistance, micro-silica fume powder can also be very useful.