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Date 03/17/2009

Lafarge MaxCem Cement to Help Tuttle Creek Dam Withstand Midwest Earthquake

Herndon, VA

Lafarge North America Inc.

 

Largest foundation stabilization project on an operational dam is relying on a Lafarge high-performance blend of slag and portland cements to meet enhanced strength requirements.

 

Lafarge, the largest supplier of cement products in the U.S. and Canada, is working with Treviicos Corporation, an internationally known geotechnical and foundation contractor, to help improve the Tuttle Creek Dam on the Big Blue River near Manhattan, KS, so it can withstand a magnitude 6.6 earthquake. U.S. Army Corps of Engineers regulations state that all dams "are required to survive and remain safe during and following the maximum credible earthquake event," which is defined as a 6.6-magnitude quake in Kansas.

 

As the word's largest foundation stabilization project on an operational dam, the multi-year structural modification work involves jet grouting, deep soil mixing, and introducing cement into foundation sands. Lafarge worked closely with Treviicos to test various combinations of portland and slag cements to meet specifications requiring a minimum strength of 170 psi over an area 6,000 feet long to a depth of more than 200 feet.

 

Based on test results and an inspection of Lafarge's local state-of-the-art manufacturing and distribution capabilities, it was determined that Lafarge MaxCem brand blended cement would be the most reliable solution for this dam safety-assurance project, the largest ever undertaken by the Army Corps of Engineers. Suitable for use in virtually all concrete applications, Lafarge MaxCem is an engineered blend of slag and portland cements that provides enhanced strength, durability, workability, and placeability characteristics. Its use also provides a significant contribution to sustainable construction.

 

Built in 1963, Tuttle Creek Dam is a 1.5-mile-long rolled-earth and rockfill structure nine miles upstream from the confluence of the Blue and Kansas Rivers and 125 miles west of Kansas City, MO. The seismic stabilization project, scheduled for completion in September 2010, will require 75,000 tons of the 50/50 MaxCem blended cement.

Contact:

Steve Meima,

Lafarge North America

703-480-3808

ADDITIONAL INFORMATION

The Lafarge Group is the world leader in building materials, with top-ranking positions in all of its businesses: Cement, Aggregates & Concrete and Gypsum. With 83,000 employees in 78 countries, the Group posted sales of 19.0 billion Euros in 2008. Lafarge North America Inc. ("Lafarge North America" or "Lafarge"), a Lafarge Group company, is the largest diversified supplier of construction materials in the United States and Canada.

In 2009 and for the fifth year in a row, the Lafarge Group was listed in the "Global 100 Most Sustainable Corporations in the World". With the world's leading building materials research facility, the Lafarge Group places innovation at the heart of its priorities, working for sustainable construction and architectural creativity.

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