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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
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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

Chapter 1 - Understanding Silica Fume
Silica Fume Reactions

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Physical properties are important in both the micro-filler and pozzolanic roles of silica fume. The very small size of the silica fume particles is also one of the keys to its performance. The values for bulk density are of interest primarily for transportation. The very high surface area can be estimated using the nitrogen adsorption (BET) method only. Surface area determinations based upon sieve analysis are meaningless.

For terms of reference, 60,000 to 150,000 ft2/lb is about 1.4 to 3.4 acres of surface area per pound of silica fume.