application of microsilica in building material industry-pg电玩城

 microsilica concrete used in 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  microsilicaconcrete, 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. silicon powder 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. 

 microsilica as a kind of auxiliary cementitious material, adding to the cement paste and concrete can not only improve the degree of cement hydration, and ca (oh) 2 secondary hydration reaction, and micro silicon powder and its secondary hydration products harmful hole of hardened cement paste filling, and improve the concrete performance of hardened cement paste and aggregate interface, silica fume to improve the hardening concrete cement paste microstructure analysis will have a positive impact, and thus on the macroscopic mechanical properties, especially have a beneficial effect for the durability of them, which is one of the basic tasks of cement and concrete materials science, moreover, the use of  microsilicacan reduce its pollution to the environment and reduce its pressure on the environment. at the same time, however, it should be noted that the improvement of  microsilicaon hardened cement slurry and concrete microstructure is related to many factors, so it is necessary to strengthen the study on this aspect, including the influence of other volcanic material on hardened cement slurry and concrete microstructure. the high alkalinity of concrete provides the condition for forming passivating film in ordinary reinforced concrete. once the passivating film is damaged, the steel bar will undergo electrochemical corrosion. 

  the rate of corrosion depends on the rate of water and oxygen entering the concrete. adding silicon powder can improve compactness and increase resistivity. therefore, the resistance to steel corrosion is greatly improved. microsilica  plays an extraordinary role in osmotic grouting engineering, especially in medium and fine sand formations. 

  it is very important to improve the injectivity of slurry and guarantee the durability of some special projects. as a grouting material,  microsilicahas very fine particles, good injectionability, non-toxicity, high strength of slurry stone and good engineering durability. through the analysis of the successful application of some projects, the silicon powder can be used as a good permeable grouting engineering grouting material, especially under the geological condition of high water level and medium fine sand layer, the silicon powder grouting material has a broad prospect of engineering application.