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Innovative Concrete Reinforcement Solutions

STRUCTURAL TECHNOLOGIES’ Tstrata Enlargement Systems™ seamlessly integrate an additional reinforced concrete layer that is fully bonded to existing structural members. Our cutting-edge system combines specific surface preparation, specialized materials, and pressurized formwork to create monolithic concrete enlargements. These systems increase or restore the load-carrying capacity, ductility, and seismic resistance to a variety of concrete structures.

Tstrata Enlargement Systems™ meet both ICRI 320.IR and ACI RAP-5 requirements for placement of concrete under pressure, and are suitable for all applications, including vertical and overhead installation.

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Solution Use Cases

Our customizable strengthening solutions can be used for these various requirements.

  • Change in Code
  • Seismic Upgrade
  • Increased Loads
  • Missing or Misplaced Reinforcement
  • Deterioration
  • Low Concrete Strength

Advantages

  • Adds significant additional capacity
  • Increases axial, shear, and bending capacity
  • Improves stiffness and ductility
  • Incorporates steel dowels to supplement shear transfer requirements
  • Can incorporate post-tensioned reinforcement to reduce service stresses and deflection
  • Uniform appearance that blends well with existing structure
  • Provides high levels of fire resistance
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Pressure sensors inside the Tstrata Pressurized Form Technology™ show high pressure is maintained after concrete placement to ensure a superior bond to the existing substrate and to minimize shrinkage.

Design Elements

Tstrata SCC Repair Material™

Self-consolidating concrete (SCC) materials to enhance consolidation in thin enlargement applications and congested reinforcement zones

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Tstrata Pressurized Form Technology™

Creates pressure to force the new concrete into the prepared surface, creating a monolithic interface between the existing substrate and the enlargement Typically monitored using special concrete pressure sensors to confirm bond of existing and new concrete

Steel Reinforcement

Designs are reinforced with mild steel and/or post-tensioning to achieve the required strength and improve serviceability performance

Structural Strengthening Design & Engineering Support

STRUCTURAL TECHNOLOGIES’ staff of engineers, technical support, and field installation specialists integrate with engineers, architects, designers, and contractors to provide a diverse range of design support services for our products and technologies.

Design-Assist & Engineered Product Support

  • Investigation Support
  • Solution Development
  • Budget Development
  • Specification Assistance
  • Constructability Consulting
  • Application Engineering
  • Quality Control Programs
  • Project-Specific Design-Assist
  • Load Testing

Meet Our Strengthening Expert

Tarek Alkhrdaji, PhD., P.E. leads our Structural Strengthening Solutions business, and is a renowned expert in the repair and rehabilitation of concrete and masonry structures.

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