B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
25/112
B28B 21/62 (2006.01) B28B 23/08 (2006.01) E01D 2/04 (2006.01) E01D 11/04 (2006.01) E01D 19/14 (2006.01) E01D 19/16 (2006.01) E04C 5/08 (2006.01) E04C 5/12 (2006.01)
Patent
CA 1300855
ABSTRACT OF THE DISCLOSURE 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 mortar. In the anchor regions, the tubular envelope includes an anchor tube enclosing an anchor pot, The anchor pot has a base with openings through which the individual elements pass in a sealed manner. The anchor pot is filled with a corrosion- protection mass. Accordingly, the individual elements are axially movable and retensionable along their entire lengths. The sheathing ducts and the anchor pot separate the cement mortar from the individual tension elements in the free region extending between the anchor pots.
561230
Jungwirth Dieter
Nutzel Oswald
Zimmermann Egbert
Dywidag-Systems International Gmbh
Fetherstonhaugh & Co.
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