July 6, 2012
Precooling Mass Concrete with Liquid Nitrogen
About 30 years ago, liquid nitrogen (LN) was first used to precool concrete.
LN is far colder and occupies a smaller volume than ice, making it more convenient to transport and store. In recent years, LN has become increasingly popular. LN-precooled concrete was used on large projects such as the Texas State Hwy. 45 Turnpike Project; the new San Francisco-Oakland Bay Bridge; the new Benicia-Martinez Bridge; and the new Hoover Dam Bridge.
John Gajda, Senior Principal Engineer at CTLGroup, and Francisco Sumodjo, Senior Applications Specialist at Air Liquide Industrial U.S. LP, co-authored this July 2012 Concrete International article.
Source: Concrete International
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- John Gajda Speaks at DOT Technology Symposium
May 17, 2012 - Mass Concrete and Power Generation
November 1, 2011 - Gajda Presents at Electric Power Conference & Exhibition in Rosemont, IL
May 11, 2011 - Gajda co-teaches Concrete Session at a 3 day Formwork Course
April 9, 2010 - Mass Concrete for Buildings and Bridges
January 1, 2007 - Engineering Mass Concrete Structures
January 1, 2006 - Precooling Mass Concrete
August 1, 2005 - Energy Efficiency of Concrete Homes
June 1, 2005 - HVAC Sizing Software for Concrete Homes
June 1, 2005 - Great Thickness Requires Great Lengths
January 1, 2005 - Cement Plant Burns Refuse in Commercial-Scale Demo
October 1, 2004 - Save Time and Money on Mass Concrete Construction
September 1, 2003 - Controlling Temperatures in Mass Concrete
January 1, 2002