DYWIDAG Prestressing Systems using Bars

Overview unbonded and external bar tendons

Unbonded and external bar tendons are installed either inside or outside the cross section of the structure. Various corrosion protection systems are available, none of which bond with the structure. The tendons may be restressed at any time and, depending on the tendon type, they can also be removed or exchanged.

Internal unbonded and external tendons are intended for use in concrete, composite, steel, timber and masonry structures.

The corrosion protection of unbonded and external tendons depends on environmental conditions and service time.