Turnkey Post-Tensioning Repair Solutions

STRUCTURAL TECHNOLOGIES offers highly specialized products and services including investigation, design support, repair and replacement components, corrosion protection products, strengthening solutions as well as complete new or replacement post-tensioning systems.

Strengthening Solutions

As an alternative or supplement to post-tensioning repair, STRUCTURAL TECHNOLOGIES offers a full suite of strengthening systems to add or restore structural load carrying capacity.

Strengthening Systems

Post-Tensioned Structure Modification

STRUCTURAL TECHNOLOGIES provides design assistance and technology solutions for the modification of existing post-tensioned structures

Repair & Modification of Post-Tensioned Concrete Structures: Products & Services


Petrochemical Contracting Services

We help solve common problems with post-tensioned concrete:

  • Modifications

  • Damage

  • Deterioration

  • Design & construction error



For the repair and modification of post tensioning (PT) systems as well as post-tensioned concrete structure repair and protection, STRUCTURAL TECHNOLOGIES, a Structural Group company, offers highly specialized products and services including investigation, repair design support, repair and replacement components, corrosion protection products, strengthening solutions as well as new or replacement post-tensioning systems.

Our specialized PT repair offering is designed to assist engineers, owners and contractors to maintain or extend the service life of their PT structures - by providing solutions throughout the entire process - from initial assessment through field implementation.







Post-Tensioning Repair Products & Systems

STRUCTURAL TECHNOLOGIES has an array of specialized products and systems used to repair, strengthen and protect post-tensioned structures. Our inventory includes product solutions for every component of a post-tensioning system – as well as specialized equipment used to install these systems in existing structures. 

Unbonded PT Anchorages & Splices

STRUCTURAL TECHNOLOGIES has developed and provides various anchorages and splicing solutions for the repair and replacement of monostrand and buttonhead wire systems, including:

  • Center stressing anchors
  • Torque stressing anchors
  • Splice chucks
  • Buttonhead to monostrand combination anchorages
  • Live and dead end anchors
  • Lock off anchorages
Bonded PT Anchorages

STRUCTURAL TECHNOLOGIES offers replacement anchorages for the repair of bonded multistrand post-tensioning systems, including:

  • Thin slab bonded anchorages (2 - 4 strands)
  • Bonded multistrand anchorages (4+ strands)
Strand Systems

STRUCTURAL TECHNOLOGIES provides high strength (270 ksi) strand to repair any type of post-tensioning system, including:

  • Sheathed strand
  • Bare strand
  • VStrand™ Heat Resistive Tendons 
Bonded PT Duct & Grouting Systems

For repair of voids in bonded post-tensioning tendons, STRUCTURAL TECHNOLOGIES offers specialized products and materials, including:

  • VGrout+™ High performance admixtures for cementitious grout
  • HDPE plastic duct and mechanical coupler systems
PT Equipment

STRUCTURAL TECHNOLOGIES develops customized equipment for specific project needs and offers specialized equipment for the repair of post-tensioned concrete structures including:

  • Monostrand stressing rams
  • Multistrand stressing rams
  • Detensioning rams
  • Vacuum assisted grouting for bonded PT repair


Post Tensioning Repair Services


Investigation & Assessment Support

Engineering & Design SupportSTRUCTURAL TECHNOLOGIES offers a range of specialized investigation services to assist engineers with the assessment of post-tensioned concrete structures. Our assessment services and phased approach are designed to identify the root cause of concrete and post-tensioning system deterioration.

A more thorough evaluation of a post-tensioned structure involves a variety of non-destructive and exploratory testing to determine the condition of the post-tensioning system and the surrounding concrete. STRUCTURAL TECHNOLOGIES also offers a series of advanced testing methods to gain detailed information on the condition of the structure – or to provide estimated remaining service life based on deterioration levels and exposure conditions.

Our assessment toolbox includes a variety of proven and advanced technologies, including:

  • Magnetic methods
  • Mechanical impact / wave propagation methods
  • Ground Penetrating Radar (GPR)
  • X-ray
  • Strand tension testing (monostrand, multistrand & stay cable systems)
  • Anchorage inspections
  • Borescope inspections for grouted tendons
  • High/low point inspections
  • Electrochemical testing & analysis

Engineering & Design Support Services

Post-Tensioning ManufacturingWhether repairing the post-tensioning system, or adding supplemental structural support, STRUCTURAL TECHNOLOGIES’ in-house team of engineers provides application design support to provide value-added solutions to engineers and owners of concrete infrastructure.

Our design specialists have extensive experience, and are active members of technical organizations and committees including the American Concrete Institute (ACI) and the Post-Tensioning Institute (PTI).

During the design phase, we can also assist engineers by developing Finite Element Analysis (FEA) models to evaluate various repair solutions to predict future performance of the structure – to help select the best repair solution.




Installation: Specialty Contracting

Post-Tensioning Equipment RentalBecause of the technical and safety precautions required in repairing highly-stressed post tension tendons, knowledge of proper repair techniques is critical to maintaining the integrity and safety of the structure, and those around it.

STRUCTURAL TECHNOLOGIES’ experienced specialty contracting teams have established stringent technical guidelines, tried and tested repair details, and quality standards for field repair procedures for post-tensioned concrete structures. These standards, along with a skilled trades training program and an industry-leading safety program, instill confidence in clients looking for safe, quality, long-term solutions for their post-tensioned concrete repair problems.


Other Related Systems & Services




For some situations, repair of the post-tensioning reinforcement may not be feasible due to deterioration levels, structural capacity upgrade requirements, or access challenges. STRUCTURAL TECHNOLOGIES’ proprietary strengthening products are used to increase the load-carrying capacity of reinforced concrete and other structure types. These systems may be used alone, or in any combination - including other commercially available products to solve complex structural load requirement changes. Our strengthening systems include:

  • V-Wrap™ Carbon & Glass FRP Composite Systems
  • XPT External Post-Tensioning
  • Tstrata Enlargement Systems™

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STRUCTURAL TECHNOLOGIES, a Structural Group company, is the exclusive designer and manufacturer of VSL post-tensioning and  construction systems in the United States. VSL systems have a well-earned reputation for their quality, reliability, and durability - and have been used throughout the world since 1956 to build, repair, and strengthen bridges, buildings, tanks, and special structures. For information on VSL products outside of the United States, visit the VSL International website www.vsl.com.

With companies dating back to 1902, Structural Group is firmly committed to its ongoing mission of making new and existing structures stronger and last longer. Through its companies, Structural Group delivers turnkey solutions that integrate technology, engineering, and construction. Structural Group provides specialty contracting services through our construction companies and state-of-the-art proprietary products and engineering support services through STRUCTURAL TECHNOLOGIES.

Learn more about Structural Group and its member companies.

VSL is the registered trademark of VSL International Ltd.