Applications

Precast Concrete

Smarter Precast.
Superior Results.

Stalite Lightweight Aggregate enables precast producers to manufacture elements that are lighter, easier to handle, and faster to install — without sacrificing strength or durability. From double tees and beams to architectural panels and utility products, Stalite delivers the performance and consistency producers need for cost-effective, high-quality precast concrete.

Bridges and Stadium built precast concrete made with Stalite Lightweight Aggregate
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Bridge in Norway featuring Stalite Precast Lightweight Concrete

Lightweight Precast Concrete

Stalite Lightweight Aggregate is recognized as a highly effective material for producing high-performance precast and prestressed concrete.

Manufactured from a unique slate raw material and processed under exceptional quality control, Stalite enables producers to achieve very high compressive strengths while reducing the unit weight of precast elements by up to 30 percent. This reduction in member weight improves handling, transportation efficiency, and crane performance across a wide range of precast applications.

When lighter elements, reliable strength, and long-term durability are required, Stalite provides a proven solution for both structural and architectural precast.

Key Benefits

  • Reduced Unit Weight
    Up to 30 percent lighter than normalweight precast, reducing shipping costs and crane requirements. Lower self-weight allows longer spans, larger sections, and improved load efficiency without increasing foundation demands. Lighter members simplify handling, stripping, storage, and enable more units per truck.

  • High Strength Performance
    Regularly achieves compressive strengths of 6,000 psi and higher, with potential for 10,000+ psi. Provides structural integrity equal to or exceeding normalweight concrete. Consistent gradation and shape support predictable strength gain and reliable production cycles.

  • Faster Construction Cycles
    Lighter precast elements are easier to lift, maneuver, and install. Reduced crane time and improved placement speed help shorten schedules, reduce labor, and allow larger modules or sections for fewer total lifts.

  • Fire Resistance & Safety
    Stalite’s natural mineralogy provides greater fire endurance than normalweight concrete. Thin sections can achieve required fire ratings while conserving material. Improved thermal stability enhances life safety and overall performance.

  • Thermal & Durability Benefits
    Lower thermal conductivity contributes to improved insulation and energy efficiency. Internal curing improves cement hydration, reduces early-age shrinkage, and enhances long-term durability. Supports improved crack resistance and service life for structural and architectural precast systems.

Common Uses

  • Structural double tees, beams, and columns
  • Architectural wall panels and façade systems
  • Parking decks and stadium risers
  • Sound barriers and retaining walls
  • Precast utility structures such as vaults
  • Modular or panelized building components
  • Bridge elements where reduced dead load improves span efficiency

Lightweight precast reduces dead load, improves handling, and enhances overall production and erection efficiency.

Related Case Studies

Interstate 5 Puyallup River Bridge

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Precast concrete bridge girder transported at night as an oversize load for the Puyallup River Bridge project, showcasing long-span structural lightweight concrete construction.

Record-setting 223-ft prestressed girder built with lightweight aggregate for the I-5 Puyallup River Bridge in Tacoma, WA.

Wells Fargo Center

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Wells Fargo Center in Charlotte, NC, 48-story high-rise featuring precast prestressed concrete double tee floor system.

48-story Wells Fargo Center in Charlotte, NC constructed with lightweight precast double tees to accelerate schedule and reduce structural load.

Virginia Dare Memorial Bridge

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Aerial view of the Virginia Dare Memorial Bridge spanning 5.2 miles across the Croatan Sound in the Outer Banks, constructed with Stalite Lightweight Aggregate.

5.2-mile Outer Banks bridge built with lightweight concrete to reduce dead load and deliver long-term coastal durability.

Woodrow Wilson Memorial Bridge

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Woodrow Wilson Memorial Bridge spanning the Potomac River with deck constructed using Stalite Lightweight Aggregate concrete.

Precast lightweight concrete redecking reduced dead load and improved durability on this major Potomac River crossing.

U.S. Census Bureau Headquarters

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Exterior view of the eight-story U.S. Census Bureau Headquarters in Suitland, Maryland, constructed with precast framing and lightweight concrete floor systems using Stalite Lightweight Aggregate

Eight-story U.S. Census Bureau HQ built with precast framing and lightweight concrete floor systems in Maryland.

Annapolis Junction Business Park – Building 7

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Annapolis Junction Business Park Building 7 completed four-story blast-resistant office building constructed with structural lightweight concrete.

Blast-resistant tilt-up office building using lightweight aggregate to reduce panel weight and collapse loads.

Lord Delaware Bridge

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Lord Delaware Bridge carrying Route 33 over the Mattaponi River near West Point, Virginia, featuring lightweight high performance concrete spans and piers.

Long-span Route 33 bridge over the Mattaponi River built with structural lightweight aggregate high performance concrete girders.

Interstate 5 Skagit River Bridge Replacement

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I-5 Skagit River Bridge replacement span over the Skagit River in Washington constructed using lightweight concrete with Stalite Lightweight Aggregate.

Emergency replacement of the I-5 Skagit River Bridge in Washington using lightweight structural concrete to reduce girder weight and meet transportation limits.

Nissan Stadium

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Nissan Stadium in Nashville, Tennessee constructed with precast concrete seating elements using Stalite Lightweight Aggregate.

Major NFL stadium in Nashville constructed with precast concrete stadia units and structural elements made with lightweight structural concrete.

Supporting Documents

  • Capabilities Brochure

  • Fire Resistance Brochure

  • Specified Density Concrete Brochure

Frequently Asked Questions

Lightweight aggregate reduces unit weight, improves handling and transportation efficiency, and can lower crane requirements while maintaining high strength and durability.

Yes. Stalite is well-suited for prestressed applications, including double tees, beams, columns, and bridge elements, where strength-to-weight ratio is critical.

Lighter precast elements are easier to strip, store, transport, and erect. This can reduce cycle times, improve logistics, and shorten installation schedules.

No. Stalite’s consistent gradation and particle shape support smooth casting surfaces and high-quality architectural finishes.

Lightweight concrete made with Stalite offers enhanced fire endurance and lower thermal conductivity compared to normalweight concrete, supporting code compliance and long-term performance.

While material costs may vary, savings are often realized through reduced shipping, fewer crane lifts, faster installation, and improved overall efficiency.