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Classification: 22170505 [ACH066017]
| Preferred name | 22-17-05-05 Silica fume (additive for concrete) |
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| Definition | Pyrogenic silica (English fumed silica) is a synthetically produced colloid material with defined properties and particle size which is used as a filler. It consists entirely of amorphous silica particles aggregated to larger units. Silicon dioxide is a major component of Microsilica, an additive in the production of high-performance and ultra-high-performance concrete. The silica dust reacts with the calcium hydroxide, which is released during cement hydration, and forms so-called calcium silicate hydrate phases. Furthermore, the particles lead to a mechanical increase in strength by reducing the capillary pore proportion in the cement stone |
| IRDI | 0173-1#01-ACH066#017 |
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BASIC Properties: Silica fume (additive for concrete)
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