Corrosion protected tension member for use in prestressed concrete and method of installing same

Abstract From the Canadian patent

A corrosion-protected tension member such as a tendon, for prestressed concrete with post-tensioning is made up of a, bundle of individual tension elements such as strands, ar-, ranged within a tubular envelope. The tension member extends between anchoring devices, each forming an anchor region for the tension member with a free region located between the anchor regions. In the free region, the tubular envelope is formed of a sheathing tube. Each individual element is located within a separate sheathing duct and a corrosion-, protection mass fills the space within the ducts about the elements. The open volume within the sheathing tube around the sheathed elements is filled with cement …