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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

 

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Slide
As noted earlier, silica-fume concrete usually does not bleed. While the lack of bleeding is certainly a benefit for strength and durability, it does make the concrete more susceptible to plastic shrinkage cracking. The keys to overcoming the tendency for plastic shrinkage cracking are to understand the phenomenon and to be prepared ahead of the placement to take the necessary preventative steps.

The potential for plastic shrinkage cracking in silica-fume concrete will increase with lower water-cementitious materials ratios and with increasing amounts of silica fume in the concrete.

A more detailed discussion of plastic shrinkage cracking and preventative measures may be found in ACI 305R-91, "Hot Weather Concreting" and in ACI 308-92, "Standard Practice for Curing Concrete."