Composition and method for preserving posttensioning cables in metal reinforced concrete structures
AssigneeCortec Corporation
InventorsBoris A. Miksic, Alla Furman, Margarita Kharshan, Jessica Jackson
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Abstract
A sheathed posttensioning cable assembly including an elongated metallic cable and a coaxially disposed outer sheath, with the cable assembly including a polymeric resin fiber/filament impregnated with a migratory corrosion inhibitor being inserted within the sheath and extending along the length of the cable. The polymeric resin is preferably polypropylene, polyethylene, nylon, or polyethylene terephthalate, with the corrosion inhibitor comprising a 50:50 blend of sodium benzoate and alkali metal sebacate. The inhibitor preferably comprises between 5% and 10% by weight of the impregnated fiber/filament.
Claims7
In combination with a sheathed posttensioned cable assembly including an elongated metallic cable and a coaxially disposed outer sheath, the improvement comprising:
- a polymeric resin member selected from the group consisting of:
- a fiber, a filament, and combinations thereof, said member being inserted within a chamber defined by said sheath and extending generally continuously along the length thereof, said member comprising between about 5% and 10% by weight migratory corrosion inhibitor, and a polymeric resin matrix, wherein said migratory corrosion inhibitor comprises a blend of sodium benzoate and an alkali metal sebacate.
Dependencies are inferred from the claim text.