application of microsilica for concrete in water conservancy and hydropower engineering-pg电玩城

microsilica  namely silicon ash, is mainly used in cement, ceramics, mortar, grouting material, stereotyped refractory material or non-stereotyped refractory castable, external wall insulation, ground floor, bridge, dam, road surface, hydraulic engineering and other civil engineering concrete industry enterprises, especially cement concrete and refractory castable are most widely used. the addition of microsilica into these materials can not only reduce water strength and durability, but also reduce the amount of cement and other products.

concrete with microsilica on water resources and hydropower engineering, can improve the abrasion resistance of engineering at home and abroad the traditional abrasion resistant materials multi-purpose polymer materials such as epoxy mortar, this kind of material abrasion resistance is good, but due to its linear expansion coefficient of several times the ordinary concrete base, and basement concrete temperature adaptation is not good, easy to fall off, craze in natural climate conditions and the construction of complex, toxic and expensive, not widespread popularization and application. with the use of micro-microsilica concrete, the abrasion resistance of the concrete can be doubled, and the abrasion resistance of the concrete at the speed of 48m/s can be increased by more than 3 times.

water conservancy and hydropower projects: hydraulic structures such as dam entrance sluice, diversion channel, tunnel, pressure regulating well, substructure of main plant (especially water machine volute) and so on, make full use of silicon-powder concrete with good waterproof, anti-seepage, anti-scrubbing and anti-cavitation characteristics. since 1982, it has been widely used in the repair and maintenance projects of gezhou dam, dahuofang reservoir, yingxiuwan power station and longyangxia power station. at present, the silicon powder concrete has been widely used in ertan power station, zipingpu water conservancy project and xiaolangdi water conservancy project in the yellow river.

microsilica  concrete used in hydraulic engineering can improve the crack resistance of hydraulic concrete. the reason for the fracture is that the hydration heat of the material itself heats up. for example, if fly ash is mixed into concrete, it can reduce the heating of chemical heating, but the early strength is relatively low, which limits the dosage of fly ash.