ASTM C 1240 - 05 Standard Specification for Silica Fume Used in Cementitious Mixtures

American Society for Testing and Materials (ASTM). Current edition approved July 1, 2005. Published August 2005. Originally approved in 1993. Last previous edition approved in 2004 as C 1240-04. 7 p. This specification covers silica fume for use in concrete and other systems containing hydraulic cement.
In the cases of slurried or densified silica fume, perform the tests on the raw silica fume from which these products have been made.