DYWIDAG Post-Tensioning Systems are renowned for reliability and performance, most suitable for all applications in post-tensioned construction. They embrace the whole spectrum from bridge construction and buildings, to civil applications, above and below ground.

The first ever structure built with a prototype DYWIDAG Post-Tensioning System using Bars was the arch-bridge Alsleben (Germany) in 1927. From that time on, DYWIDAG has continuously improved its systems to keep up with the growing demand of modern construction technology. In addition to the traditional post-tensioning system using bars that is mainly geared towards geotechnical applications, building rehabilitation and strengthening, DSI offers a complete product line in strand post-tensioning (bonded, unbonded and external) as well as stay-cables and is thus able to fully serve the post-tensioning market. DYWIDAG Post-Tensioning Systems have always combined highest safety and reliability standards with most economical efficiency in their research and development.

Dependable corrosion protection methods of the DYWIDAG Post-Tensioning Systems contribute to the longevity of modern construction. High fatigue resistance is achieved by optimized material selection and cautious detailing of all the components, especially in their system assembly.

Post-Tensioning System using Strand

Strands are made from 7 individual cold-drawn wires, 6 helically wound outer wires and one center wire (king wire). The mechanical properties of the strand as well as corrosion protection properties are most important to DSI.

Strands can be supplied either bare, galvanized or epoxy-coated without any loss in strength including the wedge anchorage. For a maximum in corrosion protection we offer electrically isolated systems using polyethylene (PE) or polypropylene (PP) ducts.