Project: GM plant - Spring Hill, TN
Customer: General Motors
Contractor: LaSalle Construction, Canton, MI
Finisher: B & B Concrete Placement Corp., Romulus, MI
Project obstacles and solutions: In October of 2010, General Motors announced a $500 million rehabilitation package for the Spring Hill, Tennessee production plant to manufacture the next generation Ecotec 4-cylinder engine. This required a complete demolition of the floor in the original power train building and replacing it with a new one. This was designated as a fast-track job. The 475,000 square feet slab had to removed and replaced in 90 days.

LaSalle Construction was the general contractor for the project and B&B Concrete Placement did the site work and all the concrete pours. Given the tight deadlines and engineering specs, they were looking for a high performance concrete solution that could also speed up the construction process. They turned to IMI and imix XS. Besides compressive strength requirements, the 12 inch slab needed to achieve a corresponding equivalent flexural strength (EFS) of 250 psi. IMI suggested using imix XS Max in place of rebar for the project. This met the specs for the project and eliminated the time and materials needed to place the reinforcement. It shaved days off of the schedule. The integrally mixed imix XS steel fibers provided uniform reinforcement throughout the depth of the slab.

IMI delivered over 18,000 yards of concrete for the new Spring Hill industrial floor. The project met its fast-track construction schedule. The GM plant floor won the Best Finishing, Commercial Award from the Tennessee Concrete Association in 2012.

For more information on imix XS and the different steel fiber mixes in the imix XS product line, click here.


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