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Chapter 1 - Understanding Silica Fume
Silica Fume Products

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Silica fume is available in all of the product forms shown in this slide. Further, these product types may be available in bulk, bags, or drums as appropriate for the material and for the size of the project. Except as noted below, there is no generally accepted data that indicates that any form of the product out-performs any other form when used in concrete. Each of these product forms is described in the next few slides.

Silica fume in the pelletized form is not suitable for direct use in concrete because the pellets will not break down and disperse in a concrete mixer. Pelletized silica fume can be interground with portland cement clinker to produce blended silica-fume cement.