Corrosion protection of cables in a concrete structure
US10077554B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jul 15, 2016 |
| Grant date | Sep 18, 2018 |
| Priority date | — |
| Expiry date | Nov 20, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04C5/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Steel reinforcing cables in concrete are protected against corrosion by injecting a carrier fluid and corrosion inhibitors into interstitial spaces between the wires of the cable at a first location along the cable and causing the fluid to pass through the interstitial spaces between the wires of the cable to a second location along the cable. The cable comprises an array of wires confined together and intimately surrounded by a covering material which is engaged with a periphery of the cable so that there are insufficient interconnected spaces between the cable and the covering material to allow passage of fluid longitudinally along the cable outside the cable itself. The method can be used with pre-stressed concrete, with post-tensioned bonded cables and with extruded un-bonded mono-strand cables.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.