Silica fume from the production of silicon metal and ferrosilicon alloys may
be suitable for use in concrete applications. However, silica fume from all
of these products may not meet the minimum silicon dioxide requirements of
ASTM C 1240. If a particular silica fume does not meet the requirements of
ASTM C !240, testing is recommended to determine whether required concrete
properties can be achieved.
ASTM C 1240, Standard Specification for Silica Fume for Use as a Mineral
Admixture in Hydraulic-Cement Concrete, Mortar, and Grout.
The Silica Fume Association
38860 Sierra Lane, Lovettsville, VA 20180
Tel: 540.257.4224 Fax: 540.822.9456
