Silica fume particles viewed in a transmission electron microscope
Silica fume, also known as microsilica, (CAS number 69012-64-2, EINECS number 273-761-1) is an amorphous (non-crystalline) polymorph of silicon dioxide, silica. It is an ultrafine powder collected as a by-product of the silicon and ferrosilicon alloy production and consists of spherical particles with an average particle diameter of 150 nm. The main field of application is as pozzolanic material for high performance concrete.
It is sometimes confused with fumed silica (also known as pyrogenic silica, CAS number 112945-52-5). However, the production process, particle characteristics and fields of application of fumed silica are all different from those of silica fume.
Silicafume, also known as microsilica, (CAS number 69012-64-2, EINECS number 273-761-1) is an amorphous (non-crystalline) polymorph of silicon dioxide...
Fumedsilica (CAS number 112945-52-5), also known as pyrogenic silica because it is produced in a flame, consists of microscopic droplets of amorphous...
latent hydraulic properties. Silicafume: A by-product of the production of silicon and ferrosilicon alloys. Silicafume is similar to fly ash, but has...
French wine grape Sauvignon blanc Silicafume, a fine-grain, thin, and very high surface area silica Fifi La Fume, a purple skunks teen character from...
cement. Portland silicafume cement. Addition of silicafume can yield exceptionally high strengths, and cements containing 5–20% silicafume are occasionally...
Pak Chromical Ltd., (PCL) Colloidal silicaFumedsilica Hydrophobic silicaSilica gel Otto W. Flörke, et al. "Silica" in Ullmann's Encyclopedia of Industrial...
size of metakaolin is smaller than cement particles, but not as fine as silicafume. The quality and reactivity of metakaolin is strongly dependent of the...
polydimethylsiloxane chains. Hydrophobic silica can be processed in different ways; such as fumedsilica, precipitated silica, and aerosol assisted self assembly...
CEM V: composite cements (with large additions of BFS, fly ashes, or silicafume) Clinker is one of the ingredients of an artificial rock imitating limestone...
artificial pozzolans (blast furnace slag (in fact a latent hydraulic binder), silicafume, and fly ashes), or natural pozzolans (siliceous or siliceous aluminous...
water, air, admixtures, sand, aggregate (rocks, gravel, etc.), fly ash, silicafume, slag, and cement. A concrete plant can have a variety of parts and accessories...
high silica composition of Roman pozzolana cements is very close to that of modern cement to which blast furnace slag, fly ash, or silicafume have been...
supplementary cementitious materials (SCMs) such as metakaolin, fly ash, silicafume, and superplasticizers are common in all 3D printed concrete mixtures...
alkali–silica reaction (ASR) causes localised swelling responsible for tensile stress and cracking. The conditions required for alkali silica reaction...
to maintain desired entrained air levels compared to Class C fly ash. Silicafume is another material that influences air-entrained concrete. Its fine...
materials (peat) and industrial products or by-products (cement, slag, silicafume) are categorized under industrial minerals, as well as metallic compounds...
by-products such as fly ash, silicafume from silicon smelting, highly reactive metakaolin, and burned organic matter residues rich in silica such as rice husk ash...
solid silica (silicon dioxide, SiO2) as a white powder, char, and various gases. The readily dispersed powder is sometimes called silicafume. The pyrolysis...
to SiC by heating in the excess carbon from the organic material. The silicafume, which is a byproduct of producing silicon metal and ferrosilicon alloys...
Post-Tension. The building was constructed with dense steel reinforcing and silica-fume concrete, and is designed to sustain hurricane-force winds. Construction...
bentonite. Silica – α quartz and condensed silicafume. α quartz is used to prevent strength retrogression in thermal wells. Silicafume (micro fume) is highly...
weathering damage. Pozzolans include powdered brick, heat treated clay, silicafume, fly ash, and volcanic materials. The chemical set imparted ranges from...
made by lowering the water-cement (W/C) ratio to 0.35 or lower. Often silicafume is added to prevent the formation of free calcium hydroxide crystals...
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