Bonded Post-Tensioning

DYWIDAG bonded post-tensioning systems are represented in landmark structures around the world.

Durable and reliable, DYWIDAG bonded post-tensioning systems use strands or DYWIDAG Threadbars™ in new construction—and strengthen or repair infrastructure.

The systems provide transversal post-tensioning, the longitudinal stressing of bridge girders, the transversal stressing of bridge decks and can be used in concrete floor slabs within multi-storey buildings.

Bonded post-tensioning systems are used in

  • Bridges

  • Buildings

  • Tanks and silos

  • Slabs

  • Underpasses

Strand systems

DYWIDAG bonded post-tensioning strand systems are used in the post-tensioning of concrete bridges, slab decks, and confinement structures—like LNG tanks.

Bar systems

DYWIDAG bonded post-tensioning bar systems strengthen existing concrete structures, connect precast members, and create the fixation or tieback anchorages of steel structures.

Bar type WR for tendons longer than about 2.5 m provides a continuous coarse thread over the full length and are available for all bar diameters. The low-slip anchorage with nuts already allows for low losses of prestressing force. However, bars shorter than about 2.5 m demand bar type WS with smooth surface and machined fine thread on both ends for minimum slip after lock-off.

Projects

Strand systems up to 55 strands

Bar systems up to diameters 47mm

Couplers

Plate, multiplane and bond anchorages

Corrugated metal and plastic ducts

Solutions for all protection levels available (PL1-PL3 including EIT)

All relevant approvals available

Prefabrication resp. site assembly possible

Suitable installation, stressing and grouting equipment available

Technical support (e.g. stressing instruction, detailing of anchor zone design etc.)