What's New / Hot

News and Events

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

 
Chapter 1 - Understanding Silica Fume
Silica Fume Definitions

Previous Next
Slide
Before its widespread use in concrete, most silica fume was land filled. Today, very little is land filled in the USA.

On August 28, 2001, the Environmental Protection Agency (EPA) published notice in the Federal Register (66 FR 45256) of its intention to add cement and concrete containing silica fume to the list of materials meeting the requirements for recycled materials under the auspices of the Resource Conservation and Recovery Act (RCRA). This proposed action is currently open for public comment. If approved as proposed, silica fume will join fly ash and ground granulated blast furnace slag in the category of concrete materials covered by RCRA.

For additional information on the implications of a material being identified under RCRA, see the Federal Register cited above or visit the EPA's web site for RCRA: www.epa.gov/cpg