G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 27/00 (2006.01) C23F 13/00 (2006.01)
Patent
CA 2567120
The deterioration of reinforced concrete structures by galvanic corrosion is a well understood problem, particularly as it affects roads, bridges, parking garages and buildings that use reinforcing steel in their construction. Galvanic cathodic protection is typically provided for such reinforced concrete structures using embedded sacrificial anodes, such as zinc, aluminum, and alloys thereof. Disclosed herein is an anode assembly (10) for cathodic protection of a reinforced concrete structure. The assembly comprises at least one sacrificial anode member (12). The anode member is covered with an ionically-conductive covering material (14) into which is bound an electrochemical activating agent at least partly covering the sacrificial anode member. One side (26) of the ionically-conductive covering material is configured to conform closely and securely to a steel reinforcing bar. The conforming side has a non-conductive barrier (16) as an integral part of the covering material. An electrical connection is established between the anode member and a ferrous reinforcing bar (20) using conductive wires (18).
La détérioration des structures de béton armé par corrosion galvanique est un problème bien compris affectant en particulier les routes, les ponts, les garages de parking, et les bâtiments, renfermant des armatures de renfort en acier. Pour la protection cathodique galvanique de ces ouvrages, on utilise des anodes sacrificielles enfouies de zinc, d'aluminium ou de leurs alliages. L'invention porte quant à elle sur un système d'anode (10) de protection cathodique comportant au moins un élément (12) sacrificiel d'anode recouvert au moins partiellement d'un matériau (14) de couverture à conduction ionique renfermant un agent électrochimique recouvrant au moins partiellement ledit élément sacrificiel (12). L'un des côtés du matériau (14) à conduction ionique, conçu pour s'adapter étroitement et se fixer à un fer de l'armature, comporte une barrière non conductrice (16) faisant partie du matériau de couverture, tandis qu'on établit une connexion électrique entre l'élément d'anode et un des fers (20) au moyen de fils conducteurs (18).
Bechkowiak Russell J.
Bennett John E.
Griffis Dale W. II
Bennett John E.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
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