Post-Tensioning Repair
Repair & Modification of Post-Tensioned Concrete Structures: Products & Services
For the repair and modification of post-tensioning (PT) systems as well as post-tensioned concrete structure repair and protection, Tstrata 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.
When installing Tstrata’sss post-tensioning repair products and systems, our repair and maintenance companies provide our clients with the reassurance that our technology solutions are being installed by experienced professionals with the highest standards for quality control and safety.
Common Applications
We help solve common problems with post-tensioned concrete:
Post-Tensioning Repair Products
Tstrata offers a range of specialized products and systems designed 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
Tstrata 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
Tstrata 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
Tstrata 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, Tstrata offers specialized products and materials, including:
- VGrout+™ High-performance admixtures for cementitious grout
- HDPE plastic duct and mechanical coupler systems
PT Equipment
Tstrata 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
Investigation & Assessment Support
Tstrata 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.
Tstrata 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:
- Electrochemical testing & analysis
- 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
Featured Projects
Design & Engineering Support
Tstrata’s 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.
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.
Design-Assist & Engineered Product Support
Product Installation Support
We provide technical support to our repair and maintenance companies, as well as other contractors in the field. Our installation support services include:
Post-Tensioning Repair & Maintenance Services
Tstrata’s contracting licensees have offices across the United States and the Middle East – providing industry-leading repair and maintenance services to make structures stronger and last longer.
Our companies have established stringent technical guidelines, tried and tested repair details, and quality standards for field procedures for post-tensioned structure repair. Our contracting partners provide specialized field leaders and crews – staffed with PTI-certified technicians – to work closely with project teams from project pre-planning through completion.
Get the Right Strengthening Solution
Tell us about your structure & we’ll help determine the right strengthening approach.
