Concrete and Copper wiring

Question

Concrete and Copper wiring

eatapeach (Military)

(OP)

11 Oct 17 18:31

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 (Structural) · Answer 1 · 2017-10-11 18:48:39

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 (Structural) · Answer 2 · 2017-10-11 19:59:34

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 (Mechanical) · Answer 3 · 2017-12-03 14:57:14

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 (Structural) · Answer 4 · 2017-12-03 16:04:49

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

Dik

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Concrete and Copper wiring