Post-Tensioning - Dams
Optimal resistance and durability
Post-tensioning increases the safety and durability of dams by applying controlled compression to concrete elements that face high hydraulic and structural forces. VSL delivers reliable post-tensioned systems that support both new dam construction and major rehabilitation works.
The Role of Post-tensioning in Dam Engineering
Post-tensioning introduces beneficial compressive forces that counteract uplift and overturning pressures, improving the safety of gravity and arch dams.
Many older dams require strengthening to meet new codes. Post-tensioning restores lost capacity and upgrades safety margins without intrusive reconstruction.
Post-tensioning helps dams resist cyclic forces and crack propagation, ensuring continuity of service after seismic events.
Compression limits tensile stresses in zones prone to cracking, which reduces seepage risks and improves long-term watertightness.
Post-tensioning provides additional capacity when dams undergo height increases, spillway upgrades, or foundation reinforcement.
Engineers design slimmer concrete sections thanks to active tensioning, lowering volumes, reducing costs, and improving environmental impact.
VSL’s Post-Tensioning Services
VSL delivers complete post-tensioning solutions – from engineering to on-site execution – adapted for airport logistics and accelerated programs.
Feasibility and design support
Supply of internal and external post-tensioning systems
Post-tensioning works
Inspections and maintenance
Dam strengthening and rehabilitation solutions
Why Choose VSL for post-tensioning works on dams?
Strong post-tensioning know-how
VSL has long-standing experience in designing and installing post-tensioned systems across a wide range of complex structures.Integrated engineering and execution
Our teams define suitable tensioning solutions and ensure consistent delivery on site, reducing interfaces and improving project efficiency.Reliable systems for demanding environments
VSL provides robust tendons, anchorages, and protection systems that suit high loads, aggressive environments, and long service-life requirements.Strict quality and monitoring processes
We apply rigorous control of forces, protection measures, and long-term monitoring to secure performance throughout the structure’s lifespan.
FAQs about post-tensioning in dams
Engineers generally use it when uplift, overturning, seismic forces, or aging reduce the dam’s structural capacity. It also applies to heightening projects or spillway upgrades.
The choice depends on geometry, foundation conditions, structural requirements, and access constraints. VSL assesses all parameters and proposes a tailored internal or external solution.
Modern protection systems with corrosion barriers, grouting, and monitoring deliver long-term performance that aligns with dam-safety requirements.