Concrete and Copper wiring

eatapeach · Oct 11, 2017

The bare copper lightning protection conductor was installed down the side of a building into the concrete footing. Is it acceptable to incase a copper wire into concrete? Is concrete corrosive to copper?
Thanks,

dik · Oct 11, 2017

Copper is often embedded in concrete as part of the grounding system. Many large switchyards have components where the rebar must be grouted.

Dik

flight7 · Oct 11, 2017

According to ACI 222.3R, copper is chemically stable in concrete except when chlorides or ammonia are present. Air entraining agents can release small amounts of ammonia. A galvanic cell is created when copper is electrically connected to reinforcing steel in which the steel becomes anodic and corrodes in the presence of chlorides.

robyengIT · Dec 3, 2017

in some countries copper wire is encased in spun concrete steel poles (i.e. for street lighting and power transmission) for earthing the steel reinforcement cage and the pole itself

dik · Dec 3, 2017

The word 'grouted' should be 'grounded' in my above post.

Dik

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Concrete and Copper wiring

eatapeach

Military

dik

Structural

flight7

Structural

robyengIT

Mechanical

dik

Structural

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