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New Dallas Cowboys Stadium Rides on Cement-Stabilized Soils
 The
2.3-million-square-foot Dallas Cowboys Stadium now under construction
in Arlington, Texas, will be the largest enclosed stadium in the
National Football League and the biggest domed structure in the
world.
The list of firsts extends down to the pavement, where all 30,000
parking spaces serving the stadium will be built on cement-stabilized
subgrade soils.
The soils are treated with a slurry that includes both cement and
lime to meet the specifications of the City of Arlington, which
requires both materials to modify and stabilize subgrades.
Delivering the materials in slurry form rather than as separate
dry materials reduces cost and application time says TXI, which
is supplying the slurry for soil stabilization and ready mixed concrete
for the stadium structure.
“Developers like one product and one cost, while contractors
like one application,” says Dan Richwine, quality control
manager for TXI.
The construction process is similar to that for full-depth reclamation,
says Richwine. The contractor preps the grade by shaping it for
drainage and bringing it to proper elevation. The cement-lime slurry
is sprayed from an applicator truck onto the surface of the grade.
A reclaiming machine then mixes the slurry into the soils until
a homogenous mixture is created. Once compacted and graded, the
subgrade is ready for the final pavement surface.
Stadium construction began in 2007 and is expected to be completed
for the 2009 football season.
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