Aggregated fumed Silica can be applied to large surfaces to render them hydrophobic. Micro and nanoscale structures, resembling ball and block-like forms, are attributed to the hydrophobic characteristics. They enable silicone to be used safely in ovens and direct contact with food. And we also offer a further special feature: AEROSIL® fumed Silica enables you to manufacture colorless, highly transparent silicone rubber used in medical applications. Silica fume, a by-product of the ferrosilicon industry, is a highly pozzolanic material used to enhance concrete's mechanical and durability properties. It may be added directly to concrete as an individual ingredient or in a blend of Portland cement and silica fume. They found that the mechanical properties of concrete were improved when SF replaced cement. Shannag  found that certain natural pozzolan-silica fume combinations can improve the compressive and splitting tensile strengths, workability, and elastic modulus of concrete. Crystalline Silica is toxic to humans when inhaled because of how it damages tissues in the lungs. Crystalline Silica in other places in the environment, such as surface water or groundwater, is not a concern for human health because it is not breathed in from these sources. Even after exposure to silica dust ceases, the particles remain in the lungs, causing damage. This condition is called silicosis, and there is no cure. Chronic silicosis typically occurs after 15-20 years of occupational exposure to respirable Silica. If you are looking for high quality, high purity and cost-effective fumed silica, or if you require the latest price of fumed silica, please feel free to email contact mis-asia.