performance characteristics and application of silica fume mortar-pg电玩城

before we understand the silica fume mortar, let us first understand the basic characteristics of silica fume.

  color - the color of silica fume is between light gray and dark gray.

  specific gravity - the specific gravity of silica fume is about 2.2g/cm3, which is lighter than cement (3.1g/cm3) and similar to fly ash.

  loose bulk density—the bulk bulk density of the original silica fume obtained by direct receiving dust is generally between 150 and 250 kg/m3. the densification process can increase the loose bulk density of the silica fume to 500-700 kg/m3, that is, the dense silica fume.

  particle shape - very small, smooth surface glassy spherical particles.

  particle size - most particles have a particle size of less than 1 micron and an average particle size of about 0.15 microns, which is only 1/100 of the diameter of the cement particles.

  specific surface area - between 15,000 and 25,000 m2/kg (determined by nitrogen adsorption).

 the silicon powder mortar is prepared by mixing ordinary cement mortar with silicon powder. suitable for re-painting after concrete carbonized layer is cut. due to its superior mechanical properties and impermeability, silica fume mortar is especially suitable for the anti-carbonization treatment of the ship wall surface of ship locks and navigation gates. according to the test, its anti-wear performance is 1.5 times higher than that of c60 cement mortar. the 28-carbonization test depth of the compressive strength of 3.6 mpa and the co2 concentration of 30% was zero.

    the construction process of silicon powder mortar is: concrete surface chiseling, washing, brushing cement silicon powder paste, micro silicon powder mortar curing 14d. the thickness of the silicon powder mortar layer is generally about 2 cm.

    1. silicone mortar has superior anti-wear performance. compared with ordinary cement no. 600, the anti-wear performance is improved by 60% to 150%.

    2, silicon powder mortar significantly improves the compactness of the mortar, the water absorption rate of the mortar is reduced to 20 to 30% of ordinary cement and the impermeability is greatly improved, which can effectively prevent the intrusion of harmful ions, thereby improving the durability of the mortar.

    3. the compressive strength of silica fume is 45 to 66% higher than that of ordinary mortar, the tensile strength is increased by 7% to 20, and the highest strength is up to 11600 n/cm. the “silica powder mortar” can also promote cement hydration and improve early strength. .

  gansu lixinyuan micro silicon powder co., ltd. is a high-quality silica ash manufacturer to provide you with professional products and services. welcome new and old customers to come to consult.