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ACI Spring 2010 Convention
March 21 - 25, 2010
Marriott Rivercenter Hotel & Henry B. Gonzalez Convention Center -- San Antonio, TX

NRMCA Sustainable Conference
April 12 - 15, 2010
Tempe, AZ

International Parking Institute Conference & Expo
May 10 - 12, 2010
Mandolay Bay - Las Vegas, NV

International Bridge
Conference 2010

June 6 - 9, 2010
David L. Lawrence Convention Center - Pittsburgh, PA

ACI Fall 2010 Convention
October 24 - 28, 2010
The Westin Convention Center -- Pittsburgh, PA


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All of the standard specifications shown are essentially prescription specifications that do not address the performance of the silica fume in a particular application. Basically, silica fume complying with these specifications will be similar to silica fume that has been used in the past on a wide variety of projects and that is described in the research literature.

Do not rely on these specifications to predict concrete performance if you have a particularl application. There is no substitute for testing with your local materials to determine if a particular silica fume will meet the needs of your project.

Note also that silica fume that does not comply with these specifications may perform very well in some applications. In particular, the requirement that these specifications contain for a minimum silicon dioxide content of 85 percent may not be necessary for all uses.

ASTM C 1240, Silica Fume for Use as a Mineral Admixture in Hydraulic- Cement Concrete, Mortar, and Grout. AASHTO M 307, Microsilica for Use in Concrete and Mortar. CSA (Canadian Standards Association) A 23.5, Supplementary Cementing Materials.