Strand Post Tension Experts is proud to be one of the first teams to successfully execute unbonded post-tensioning systems in Kerala, seeing new benchmarks in structural efficiency and innovation
In today’s construction industry, the demand for longer spans, reduced structural weight, and optimized costs has led to the widespread adoption of unbonded post-tensioning systems. This advanced technique enhances the performance of concrete structures by introducing controlled compressive forces, improving both strength and durability.
At Strand Post Tension Experts, we provide complete solutions in design, supply, and execution of unbonded post-tensioning systems, ensuring high-quality and reliable structural performance.
System Overview
Unbonded post-tensioning consists of high-strength mono-strand tendons enclosed in a protective sheath and coated with corrosion-resistant grease. Unlike bonded systems, the tendon remains free to move within the sheath, allowing efficient stress distribution along its length.
This flexibility makes the system highly effective for slabs, beams, and complex structural geometries.
Main Components
The unbonded PT system comprises:
Mono-strand high tensile steel (12.9 mm nominal diameter)
Anchorage system (anchor plates and wedges)
Polyethylene sheathing for protection
Corrosion-resistant grease coating
Encapsulation system for durability
- All components are designed to meet relevant standards and ensure long-term performance.
Working Sequence
A typical execution process includes:
- Material Procurement & Inspection
- Tendon Laying as per Profile
- Concrete Pouring after Reinforcement Completion
- Stressing of Tendons using Hydraulic Equipment
- Anchorage Sealing & Pocket Grouting
This systematic approach ensures proper load transfer and structural efficiency.
Design & Structural Advantages
✔ Enhanced Structural Performance
Pre-compression reduces tensile stresses and improves load-carrying capacity.
✔ Longer Spans & Architectural Flexibility
Allows wider column spacing and open layouts.
✔ Reduced Slab Thickness
Optimized section leads to reduced dead load and foundation cost.
✔ Crack Control & Durability
Minimizes shrinkage cracks and improves service life.
✔ Material Optimization
Significant reduction in convenƟonal reinforcement and concrete usage.
Applications
Unbonded post-tensioning is widely used in:
- Residential & commercial buildings
- High-rise structures
- Parking structures
- Industrial floors
- Transfer beams and long-span slabs
Our Expertise
At Strand Post Tension Experts, we deliver end-to-end post-tensioning solutions:
- Professional PT design and detailing
- Supply of high-quality PT materials
- On-site execution with advanced stressing equipment
- Value engineering for cost and performance optimization
Our team ensures strict quality control, precision execution, and adherence to standards at every stage.
Why Choose Us
- Kerala’s first unboubed post tension firm.
- Experienced technical and execution team.
- Kerala’s first unbounded post tension company.
- Modern equipment and calibrated stressing systems.
- Strong focus on quality and transparency.
- Proven capability in delivering efficient PT solutions.
Conclusion
Unbonded post-tensioning is a proven and reliable system that enhances structural efficiency while reducing cost and material consumption. With proper design and execution, it enables engineers and developers to achieve innovative and sustainable structures.
Partner with Strand Post Tension Experts to bring advanced engineering solutions to your projects