What is code for silica fume?

What is code for silica fume?

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Name: Silica fume CAS: 69012-64-2 EINECS: 273-761-1 Molecular formula: C7H9N5S2 Molecular weight: 227.3099 The main chemical composition of silica fume is: SiO2: 85-96% Al2O3 Fe2O3 MgO CaO NaO Fineness of silica fume: the fineness of silica fume less than 1 µ m accounts for more than 80%, the average particle size…
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Building Concrete Silica Fume Formula

Building Concrete Silica Fume Formula

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Application scope of micro silica fume (silica fume) for building concrete 1. For water conservancy and hydropower projects: after adding micro silica fume to the anti-seepage and anti abrasion parts, the anti-seepage, anti cracking, anti abrasion and anti cavitation properties can be greatly improved, and the service life of buildings…
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Silica Fume vs Fumed Silica

Silica Fume vs Fumed Silica

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Micro silica fume ①Appearance and basic chemical composition: Appearance is gray or off-white powder, refractoriness > 1600 ℃. Bulk density: 1600~1700 kg/cm3. The chemical composition is as follows: SiO2 content: 75~98% Al2O3 content: 1.0±0.2% Fe2O3 content: 0.9±0.3% ② Fineness and specific surface area: The fineness of silica fume is less…
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Where does silica fume come from?

Where does silica fume come from?

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Silica fume is produced in the process of smelting industrial silicon and ferrosilicon in industrial electric furnaces at high temperature, and the smoke and dust escaping with the exhaust gas are collected and processed by a special collection device. Also called micro-silica fume, scientific name "silica fume". In the escaping…
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Silica Fume Effect On Concrete

Silica Fume Effect On Concrete

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Silica fume is a kind of concrete admixture with extremely small particle size formed in the process of metallurgical industry and industrial silicon production. Silica fume contains a large amount of amorphous silica, and the particle size is very small, and it has strong bonding force, so it is suitable…
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Micro silica use in concrete

Micro silica use in concrete

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1. Low heat concrete Replacing cement with silica fume, the strength remains unchanged and the temperature of the concrete changes, which is the most effective way to obtain low-heat concrete while maintaining the same early strength. 2. Waterproof concrete Due to its low permeability, in some relatively humid places, micro…
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Silica Fume MSDS – Microsilica material safety data sheet

Silica Fume MSDS – Microsilica material safety data sheet

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(1) Identification Chemical name: Silica Fume Synonym: Micosilica CAS No: 69012-64-2 Molecular formula: Molecular weight: (2) Ingredient composition information Hazardous ingredients: Content CAS No Silica Fume  69012-64-2 (3) Risk overview Hazard category Intrusion route: Health Hazards: This product is non-toxic to humans. Inhalation of high concentrations can cause mild irritation to…
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Why need to add silica fume in concrete?

Why need to add silica fume in concrete?

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Why need to add silica fume in concrete? 1. When making concrete mixtures, in order to obtain the fluidity required by the construction, it is often necessary to add more water (more than the amount of water required by cement hydration). This additional water will not only make the cement…
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